Prof. Dr. Christian Hemker-Hess

Research Interests

• Quantum matter: correlated electron systems, low-dimensional quantum magnets, unconventional superconductors, topological matter

• Transport properties of quantum matter

• Spin-heat transport of quantum magnets

• Scanning tunneling microscopy and spectroscopy of quantum matter at low temperature

List of Journal Publications

2023

High-T_c surface superconductivity in topological Weyl semimetal t-PtBi₂,
S. Schimmel, Y. Fasano, S. Hoffmann, J. Puig, G. Shipunov, D. Baumann, S. Aswartham, B. Büchner, C. Hess,
arXiv:2302.08968

Spinon heat transport in the three-dimensional quantum magnet PbCuTe₂O₆,
X. Hong, M. Gillig, A. R. N. Hanna, S. Chillal, A. T. M. Nazmul Islam, B. Lake, B. Büchner, C. Hess,
Accepted in Phys. Rev. Lett.

Phononic-magnetic dichotomy of the thermal Hall effect in the Kitaev-Heisenberg candidate material Na₂Co₂TeO₆,
M. Gillig, X. Hong, C. Wellm, V. Kataev, W. Yao, Y. Li, B. Büchner, C. Hess,
Phys. Rev. Research 5, 043110 (2023)

Berezinskii–Kosterlitz–Thouless Transition in the Type-I Weyl Semimetal PtBi₂,
A. Veyrat, V. Labracherie, D. L. Bashlakov, F. Caglieris, J. I. Facio, G. Shipunov, T. Charvin, R. Acharya, Y. Naidyuk, R. Giraud, J. van den Brink, B. Büchner, C. Hess, S. Aswartham, J. Dufouleur,
Nano Lett. 23, 1229 (2023)

2022

Heat transport of the kagomé Heisenberg quantum spin liquid candidate YCu₃(OH)_6.5Br_2.5: localized magnetic excitations and spin gap,
X. Hong, M. Behnami, L. Yuan, B. Li, W. Brenig, B. Büchner, Y. Li, C. Hess,
Phys. Rev. B 106, L220406 (2022)

Absence of hexagonal-to-square lattice transition in LiFeAs vortex matter,
S. Hoffmann, R. Schlegel, C. Salazar, S. Sykora, P. K. Nag, P. Khanenko, R. Beck, S. Aswartham, S. Wurmehl, B. Büchner, Y. Fasano, C. Hess,
Phys. Rev. B 106, 134507 (2022)

Ubiquitous enhancement of nematic fluctuations across the phase diagram of iron based superconductors probed by the Nernst effect,
C. Wuttke, F. Caglieris, S. Sykora, F. Steckel, X. Hong, S. Ran, S. Khim, R. Kappenberger, S. L. Bud’ko, P. C. Canfield, S. Wurmehl, S. Aswartham, B. Büchner, C. Hess,
npj Quantum Materials 7, 82 (2022)

Absence of nematic instability in LiFeAs,
M. Wissmann, F. Caglieris, X. Hong, S. Aswartham, A. Vorobyova, I. Morozov, B. Büchner, C. Hess,
Phys. Rev. B 106, 054508 (2022)

Elastoresistivity of heavily hole doped 122 iron pnictides superconductors,
X. Hong, S. Sykora, F. Caglieris, M. Behnami, I. Morozov, S. Aswartham, V. Grinenko, K. Kihou, C.-H. Lee, B. Büchner, C. Hess,
Front. Phys. 10, 853717 (2022)

Spin liquid evidence at the edge and in bulk,
A. U. B. Wolter, C. Hess,
Nature Physics 18, 378 (2022)

A robust thermoelectric module based on MgAgSb/Mg₃(Sb,Bi)₂ with a conversion efficiency of 8.5% and a maximum cooling of 72 K,
P. Ying, L. Wilkens, H. Reith, N. Perez Rodriguez, X. Hong, Q. Lu, C. Hess, K. Nielsch, R. He,
Energy & Environmental Science 15, 2557 (2022)

2021

Thermal transport of the frustrated spin-chain mineral linarite: Magnetic heat transport and strong spin-phonon scattering,
M. Gillig, X. Hong, P. Sakrikar, G. Bastien, A. U. B. Wolter, L. Heinze, S. Nishimoto, B. Büchner, C. Hess,
Phys. Rev. B 104, 235129 (2021)

State with spontaneously broken time-reversal symmetry above the superconducting phase transition,
V. Grinenko, D. Weston, F.Caglieris, C. Wuttke, C. Hess, T. Gottschall, I. Maccari, D. Gorbunov, S. Zherlitsyn, J. Wosnitza, A. Rydh, K. Kihou, C.-H. Lee, R. Sarkar, S. Dengre, J. Garaud, A. Charnukha, R. Hühne, K. Nielsch, B. Büchner, H.-H. Klauss, E. Babaev,
Nature Physics 17, 1254 (2021)

Strongly scattered phonon heat transport of the candidate Kitaev material Na₂Co₂TeO₆,
X. Hong, M. Gillig, R. Hentrich, W. Yao, V. Kocsis, A. R. Witte, T. Schreiner, D. Baumann, N. Pérez, A. U. B. Wolter, Y. Li, B. Büchner, C. Hess,
Phys. Rev. B 104, 144426 (2021)

Laser-Assisted Floating Zone Growth of BaFe₂S₃ Large-Sized Ferromagnetic-Impurity-Free Single Crystals,
M. L. Amigó, A. Maljuk, K. Manna, Q. Stahl, C. Felser, C. Hess, A. U. B. Wolter, J. Geck, S. Seiro, B. Büchner,
Crystals 11, 758 (2021)

Revisiting the phase diagram of LaFe_1-xCo_xAsO in single crystals by thermodynamic methods,
F. Scaravaggi, S. Sauerland, L. Wang, R. Kappenberger, P. Lepucki, A. P. Dioguardi, X. Hong, F. Caglieris, C. Wuttke, C. Hess, H.-J. Grafe, S. Aswartham, S. Wurmehl, R. Klingeler, A. U. B. Wolter, B. Büchner,
Phys. Rev. B 103, 174506 (2021)

Evidence for a percolative Mott insulator-metal transition in doped Sr₂IrO₄,
Z. Sun, J. M. Guevara, S. Sykora, E. M. Pärschke, K. Manna, A. Maljuk, S. Wurmehl, J. van den Brink, B. Büchner, C. Hess,
Phys. Rev. Research 3, 023075 (2021)

Strain derivative of thermoelectric properties as a sensitive probe for nematicity,
F. Caglieris, C. Wuttke, X. C. Hong, S. Sykora, R. Kappenberger, S. Aswartham, S. Wurmehl, B. Büchner, C. Hess,
npj Quantum Materials 6, 27 (2021)

Thermoelectric Properties of Novel Semimetals: A Case Study of YbMnSb₂,
Y. Pan, F.-R. Fan, X. Hong, B. He, C. Le, W. Schnelle, Y. He, K. Imasato, H. Borrmann, C. Hess, B. Büchner, Y. Sun, C. Fu, G. J. Snyder, C. Felser,
Adv. Mater. 33, 2003168 (2021)

2020

High-field thermal transport properties of the Kitaev quantum magnet α-RuCl₃: evidence for low-energy excitations beyond the critical field,
R. Hentrich, X. Hong, M. Gillig, F. Caglieris, M. Culo, M. Shahrokhvand, U. Zeitler, M. Roslova, A. Isaeva, T. Doert, L. Janssen, M. Vojta, B. Büchner, C. Hess,
Phys. Rev. B 102, 235155 (2020)

Polymorphic PtBi₂ – candidate for topological superconductivity,
G. Shipunov, I. Kovalchuk, B. R. Piening, V. Labracherie, A. Veyrat, D. Wolf, A. Lubk, S. Subakti, R. Giraud, J. Dufouleur, S. Shokri, F. Caglieris, C. Hess, D. V. Efremov, B. Büchner, S. Aswartham,
Phys. Rev. Materials 4, 124202 (2020)

Evolution of the nematic susceptibility in LaFe_1-xCo_xAsO,
X. Hong, F. Caglieris, R. Kappenberger, S. Wurmehl, S. Aswartham, F. Scaravaggi, P. Lepucki, A. U. B. Wolter, H. Grafe, B. Büchner, C. Hess,
Phys. Rev. Lett. 125, 067001 (2020)

Hydrodynamical description for magneto-transport in the strange metal phase of Bi-2201,
A. Amoretti, M. Meinero, D. K. Brattan, F. Caglieris, E. Giannini, M. Affronte, C. Hess, B. Büchner, N. Magnoli, M. Putti,
Phys. Rev. Research 2, 023387 (2020)

Substrate-Independent Magnetic Bistability in Monolayers of the Single-Molecule Magnet Dy₂ScN@C₈₀ on Metals and Insulators,
D. S. Krylov, S. Schimmel, V. Dubrovin, F. Liu, T. T. N. Nguyen, L. Spree, C.-H. Chen, G. Velkos, C. Bulbucan, R. Westerström, M. Studniarek, J. Dreiser, C. Hess, B. Büchner, S. M. Avdoshenko, A. A. Popov,
Angewandte Chemie 59, 5756 (2020)

La₆Pd_2+xSb₁₅ (x = 0.28): A rare-earth palladium intermetallic compound with extended pnictogen ribbons,
M. I. Sturza, M. L. Amigó, J. I. Facio, F. Caglieris, S. Aswartham, S. Seiro, C. Hess. J. van den Brink, S. Wurmehl, B.Büchner,
Journal of Solid State Chemistry 291, 121578 (2020)

Mg₃(Bi,Sb)₂ single crystals towards high thermoelectric performance,
Y. Pan, M. Yao, X. Hong, Y. Zhu, F. Fan, K. Imasato, Y. He, C. Hess, J. Fink, J. Yang, B. Büchner, C. Fu, G. J. Snyder, C. Felser,
Energy Environ. Sci. 13, 1717 (2020)

Incommensurate magnet iron monophosphide FeP: Crystal growth and characterization,
I. O. Chernyavskii, S. E. Nikitin, Y. A. Onykiienko, D. S. Inosov, Q. Stahl, J. Geck, X. C. Hong, C. Hess, S. Gass, A. U. B. Wolter, D. Wolf, A. Lubk, D. V. Efremov, F. Yokaichiya, S. Aswartham, B. Büchner, I. V. Morozov,
Phys. Rev. Materials 4, 083403 (2020)

Disorder-induced coupling of Weyl nodes in WTe₂,
S. Sykora, J. Schoop, L. Graf, G. Shipunov, I. V. Morozov, S. Aswartham, B. Büchner, C. Hess, R. Giraud, J. Dufouleur,
Phys. Rev. Research 2, 033041 (2020)

2019

Topological Electronic Structure and Intrinsic Magnetization in MnBi₄Te₇: A Bi₂Te₃ Derivative with a Periodic Mn Sublattice,
R. C. Vidal, A. Zeugner, J. I. Facio, R. Ray, M. H. Haghighi, A. U. B. Wolter, L. T. Corredor Bohorquez, F. Caglieris, S. Moser, T. Figgemeier, T. R. F. Peixoto, H. B. Vasili, M. Valvidares, S. Jung, C. Cacho, A. Alfonsov, K. Mehlawat, V. Kataev, C. Hess, M. Richter, B. Büchner, J. van den Brink, M. Ruck, F. Reinert, H. Bentmann, A. Isaeva,
Phys. Rev. X 9, 041065 (2019)

Berry curvature unravelled by the anomalous Nernst effect in MnGe₃,
C. Wuttke, F. Caglieris, S. Sykora, F. Scaravaggi, A. U. B. Wolter, K. Manna, V. Süss, C. Shekhar, C. Felser, B. Büchner, C. Hess,
Phys. Rev. B 100, 085111 (2019)

Spectroscopic evidence of nematic fluctuations in LiFeAs,
Z. Sun, P. K. Nag, S. Sykora, J. M. Guevara, S. Hoffmann, C. Salazar, T. Hänke, R. Kappenberger, S. Wurmehl, B. Büchner, C. Hess,
Phys. Rev. B 100, 024506 (2019)

Heat transport of cuprate-based low-dimensional quantum magnets with strong exchange coupling,
C. Hess,
Physics Reports 811, 1 (2019)

Chemical Aspects of the Candidate Antiferromagnetic Topological Insulator MnBi₂Te₄,
A. Zeugner, F. Nietschke, A. U. B. Wolter, S. Gaß, R. C. Vidal, T. R. F. Peixoto, D. Pohl, C. Damm, A. Lubk, R. Hentrich, S. K. Moser, C. Fornari, C. H. Min, S. Schatz, K. Kißner, M. Ünzelmann, M. Kaiser, F. Scaravaggi, B. Rellinghaus, K. Nielsch, C. Hess, B. Büchner, F. Reinert, H. Bentmann, O. Oeckler, T. Doert, M. Ruck, A. Isaeva,
Chem. Mater. 31, 2795 (2019)

Spin-polaron ladder spectrum of the spin-orbit-induced Mott insulator Sr₂IrO₄ probed by scanning tunneling spectroscopy,
J. M. Guevara, Z. Sun, E. M. Pärschke, S. Sykora, K. Manna, J. Schoop, A. Maljuk, S. Wurmehl, J. van den Brink, B. Büchner, C. Hess,
Phys. Rev. B 99, 121114(R) (2019)

Large Thermal Hall Effect in α-RuCl₃: Evidence for Heat Transport by Kitaev-Heisenberg Paramagnons,
R. Hentrich, M. Roslova, A. Isaeva, T. Doert, W. Brenig, B. Büchner, C. Hess,
Phys. Rev. B 99, 085136 (2019)

2018

Anomalous Nernst effect and field-induced Lifshitz transition in the Weyl semimetals TaP and TaAs,
F. Caglieris, C. Wuttke, S. Sykora, V. Süss, C. Shekhar, C. Felser, B. Büchner, C. Hess,
Phys. Rev. B 98, 201107(R) (2018)

An ultra-high vacuum scanning tunneling microscope operating at sub-Kelvin temperatures and high magnetic fields for spin-resolved measurements,
C. Salazar, D. Baumann, T. Hänke, M. Scheffler, T. Kühne, M. Kaiser, R. Voigtländer, D. Lindackers, B. Büchner, C. Hess,
Rev. Sci. Inst. 89, 065104 (2018)

Unusual Phonon Heat Transport in α-RuCl₃: Strong Spin-Phonon Scattering and Field-Induced Spin Gap,
R. Hentrich, A. U. B. Wolter, X. Zotos, W. Brenig, D. Nowak, A. Isaeva, T. Doert, A. Banerjee, P. Lampen-Kelley, D. G. Mandrus, S. E. Nagler, J. Sears, Y.-J. Kim, B. Büchner, C. Hess,
Phys. Rev. Lett. 120, 117204 (2018)

Impact of concomitant Y and Mn substitution on superconductivity in La_1-yY_yFe_1-xMn_xAsO_0.89F_0.11,
R. Kappenberger, F. Hammerath, P. Rousse, M. A. Afrassa, M. H. Haghighi, S. Kamusella, G. Prando, G. Lamura, A. U. B. Wolter, M. Moroni, S. Sanna, P. Carretta, C. Hess, H.-J. Grafe, H.-H. Klauss, S. Wurmehl, B. Büchner,
Phys. Rev. B 97, 054522 (2018)

2017

Effect of different in-chain impurities on the magnetic properties of the spin chain compound SrCuO₂ probed by NMR,
Y. Utz, F. Hammerath, R. Kraus, T. Ritschel, J. Geck, L. Hozoi, J. van den Brink, A. Mohan, C. Hess, K. Karmakar, S. Singh, D. Bounoua, R. Saint-Martin, L. Pinsard-Gaudart, A. Revcolevschi, B. Büchner, H. Grafe,
Phys. Rev. B 96, 115135 (2017)

Adsorption characteristics of Er₃N@C₈₀ on W(110) and Au(111) studied via scanning tunneling microscopy and spectroscopy,
S. Schimmel, Z. Sun, D. Baumann, D. Krylov, N. Samoylova, A. Popov, B. Büchner, C. Hess,
Beilstein J. Nanotechnol. 8, 1127 (2017)

Spin pseudogap in the S = 1∕2 chain material Sr₂CuO₃ with impurities,
G. Simutis, S. Gvasaliya, N. S. Beesetty, T. Yoshida, J. Robert, S. Petit, A. I. Kolesnikov, M. B. Stone, F. Bourdarot, H. C. Walker, D. T. Adroja, O. Sobolev, C. Hess, T. Masuda, A. Revcolevschi, B. Büchner, and A. Zheludev,
Phys. Rev. B 95, 054409 (2017)

Magnetic structure of La₈Cu₇O₁₉,
K. Prokeš, E. Ressouche, A. Mohan, A. U. B. Wolter, B. Büchner, and C. Hess,
Phys. Rev. B 95, 024405 (2017)

Chemical vapor transport and characterization of MnBi₂Se₄,
C. Nowka, M. Gellesch, J. E. Hamann Borrero, S. Partzsch, C. Wuttke, F. Steckel, C. Hess, A.U.B. Wolter, L. T. Corredor Bohorquez, B. Büchner, S. Hampel,
Journal of Crystal Growth 459, 81 (2017)

Defect states in LiFeAs as seen by low temperature scanning tunneling microscopy and spectroscopy,
R. Schlegel, P. K. Nag, D. Baumann, R. Beck, S. Wurmehl, B. Büchner, C. Hess
Phys. Status Solidi B, 254, 1600159 (2017)

A calorimetric investigation of RbFe₂As₂ single crystals,
S. Khim, S. Aswartham, V. Grinenko, D. Efremov, C.G.F. Blum, F. Steckel, D. Gruner, A.U.B. Wolter, S.-L. Drechsler, C. Hess, S. Wurmehl, B. Büchner
Phys. Status Solidi B, 254, 1600208 (2017)

Nematicity in LaFeAsO_1-xF_x,
C. Hess, H. Grafe, A. Kondrat, G. Lang, F. Hammerath, L. Wang, R. Klingeler, G. Behr, B. Büchner
Phys. Status Solidi B, 254, 1600214 (2017)

2016

Combined resistivity and Hall effect study on NaFe_1-xRh_xAs single crystals,
F. Steckel, F. Caglieris, R. Beck, M. Roslova, D. Bombor, I. Morozov, S. Wurmehl, B. Büchner, C. Hess,
Phys. Rev. B 94, 184514 (2016)

Magnetotransport and de Haas-van Alphen measurements in the type-II Weyl semimetal TaIrTe₄,
S. Khim, K. Koepernik, D.V. Efremov, J. Klotz, T. Förster, J. Wosnitza, M.I. Sturza, S. Wurmehl, C. Hess, J. van den Brink, B. Büchner,
Phys. Rev. B 94, 165145 (2016)

Spin dynamics and magnetic interactions of Mn dopants in the topological insulator Bi₂Te₃,
S. Zimmermann, F. Steckel, C. Hess, H. W. Ji, Y. S. Hor, R. J. Cava, B. Büchner, V. Kataev,
Phys. Rev. B 94, 125205 (2016)

Pseudospin transport in the J_eff = 1∕2 antiferromagnet Sr₂IrO₄,
F. Steckel, A. Matsumoto, T. Takayama, H. Takagi, B. Büchner, C. Hess,
EPL (Europhysics Letters) 114, 57007 (2016)

Physical properties optimization of polycrystalline LiFeAs,
S.J. Singh, U. Gräfe, R. Beck, A.U.B. Wolter, H. Grafe, C. Hess, S. Wurmehl, B. Büchner,
Physica C 529, 8 (2016)

Magnetic ordering in the ultrapure site-diluted spin chain materials SrCu_1-xNi_xO₂,
G. Simutis, M. Thede, R. Saint-Martin, A. Mohan, C. Baines, Z. Guguchia, R. Khasanov, C. Hess, A. Revcolevschi, B. Büchner, A. Zheludev
Phys. Rev. B 93, 214430 (2016)

Two distinct superconducting phases in LiFeAs,
P. K. Nag, R. Schlegel, D. Baumann, H.-J. Grafe, R. Beck, S. Wurmehl, B. Büchner, C. Hess,
Scientific Reports 6, 27926 (2016)

STM study of Au(111) surface-grafted paramagnetic macrocyclic complexes [Ni₂L(Hmba)]⁺ via ambidentate coligands,
C. Salazar, J. Lach, F. Rückerl, D. Baumann, S. Schimmel, M. Knupfer, B. Kersting, B. Büchner, C. Hess,
Langmuir 32, 4464 (2016)

Unusual magnetotransport properties in a FeAs single crystal,
S. Khim, M. Gillig, R. Klingeler, S. Wurmehl, B. Büchner, C. Hess,
Phys. Rev. B 93, 205129 (2016)

Single crystal growth of spin-ladder compound La₈Cu₇O₁₉ by the travelling-solvent floating zone method,
A. Mohan, S. Singh, S. Partzsch, M. Zwiebler, J. Geck, S. Wurmehl, B. Büchner, C. Hess,
Journal of Crystal Growth 448, 21 (2016)

Ba₂YIrO₆: A cubic double perovskite material with Ir⁵⁺ ions,
T. Dey, A. Maljuk, D. V. Efremov, O. Kataeva, S. Gass, C. G. F. Blum, F. Steckel, D. Gruner, T. Ritschel, A. U. B. Wolter, J. Geck, C. Hess, K. Koepernik, J. van den Brink, S. Wurmehl, B. Büchner,
Phys. Rev. B 93, 014434 (2016)

2015

Suppression of the impurity-induced local magnetism by the opening of a spin pseudogap in Ni-doped Sr₂CuO₃,
Y. Utz, F. Hammerath, S. Nishimoto, C. Hess, N. S. Beesetty, R. Saint-Martin, A. Revcolevschi, B. Büchner, H. Grafe,
Phys. Rev. B 92, 060405(R) (2015)

Superconducting spin-valve effect and triplet superconductivity in CoO_x/Fe1/Cu/Fe2Cu/Pb multilayer,
P. V. Leksin, N. N. Garif’yanov, A. A. Kamashev, Ya. V. Fominov, J. Schumann, C. Hess, V. Kataev, B. Büchner, I. A. Garifullin,
Phys. Rev. B 91, 214508 (2015)

Crystal growth and electronic phase diagram of 4d doped Na_1-δFe_1-xRh_xAs in comparison to 3d doped Na_1-δFe_1-xCo_xAs,
F. Steckel, M. Roslova, R. Beck, I. Morozov, S. Aswartham, D. Evtushinsky, C. G. F. Blum, M. Abdel-Hafiez, D. Bombor, J. Maletz, S. Borisenko, A. V. Shevelkov, A. U. B. Wolter, C. Hess, S. Wurmehl, B. Büchner,
Phys. Rev. B 91, 184516 (2015)

Characterization of doped Na(Fe_1-xT_x)As single crystals with T = Pd, Ni, Cr, Mn,
F. Steckel, R. Beck, M. Roslova, M. Abdel-Hafiez, A. U. B. Wolter, I. Morozov, S. Wurmehl, C. Hess, B. Büchner,
J. Supercond. Nov. Magn. 28, 1123 (2015)

Granular behavior observed in polycrystalline superconducting LiFeAs,
S. J. Singh, R. Beck, S. Wurmehl, C. Hess, Bernd Büchner,
Supercond. Sci. Technol. 28, 025006 (2015)

2014

Spin density wave order and fluctuations in Mn₃Si: a transport study,
F. Steckel, S. Rodan, R. Hermann, C. G. F. Blum, S. Wurmehl, B. Büchner, C. Hess,
Phys. Rev. B 90, 134411 (2014)

Thermoelectric effects and magnetic anisotropy of Ga_1-xMn_xAs thin films,
I. V. Soldatov, N. Panarina, C. Hess, L. Schultz, R. Schäfer,
Phys. Rev. B 90, 104423 (2014)

Growth of single crystalline delafossite LaCuO₂ by the travelling-solvent floating zone method,
A. Mohan, B. Büchner, S. Wurmehl, C. Hess ,
Journal of Crystal Growth 402, 304 (2014)

Spin gap in the single spin-chain cuprate Sr_1.9Ca_0.1Cu₂O₃,
F. Hammerath, E. M. Brüning, S. Sanna, Y. Utz, N. S. Beesetty, R. Saint-Martin, A. Revcolevschi, C. Hess, B. Büchner, H.-J. Grafe,
Phys. Rev. B 89, 184410 (2014)

Specific heat of Ca_0.32Na_0.68Fe₂As₂ single crystals: Unconventional s_± multiband superconductivity with intermediate repulsive interband coupling and sizable attractive intraband couplings,
S. Johnston, M. Abdel-Hafiez, L. Harnagea, V. Grinenko, D. Bombor, Y. Krupskaya, C. Hess, S. Wurmehl, A. U. B. Wolter, B. Büchner, H. Rosner, S.-L. Drechsler,
Phys. Rev. B 89, 134507 (2014)

Thin film growth of Fe-based superconductors: from fundamental properties to functional devices. A comparative review,
S. Haindl, M. Kidszun, S. Oswald, C. Hess, B. Büchner, S. Kölling, L. Wilde, T. Thersleff, V. V. Yurchenko, M. Jourdan, H. Hiramatsu, H. Hosono
Rep. Prog. Phys. 77, 046502 (2014)

Bond disorder and spinon heat transport in the S = 1∕2 Heisenberg spin chain compound Sr₂CuO₃: from clean to dirty limits,
A. Mohan, N. Sekhar Beesetty, N. Hlubek, R. Saint-Martin, A. Revcolevschi, B. Büchner, C. Hess,
Phys. Rev. B 89, 104302 (2014)

Crystal growth, structure, and transport properties of the charge-transfer salt picene/2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane,
B. Mahns, O. Kataeva, D. Islamov, S. Hampel, F. Steckel, C. Hess, M. Knupfer, B. Büchner, C. Himcinschi, T. Hahn, R. Renger, J. Kortus,
Cryst. Growth Des. 14, 1338 (2014)

Design and Properties of a Cryogenic Dip-Stick Scanning Tunneling Microscope with Capacitive Coarse Approach Control,
R. Schlegel, T. Hänke, D. Baumann, M. Kaiser, P. K. Nag, R. Voigtländer, D. Lindackers, B. Büchner, C. Hess,
Review of Scientific Instruments 85, 013706 (2014)

2013

Evidence for a vortex–glass transition in superconducting Ba(Fe_0.9Co_0.1)₂As₂,
G. Prando, R. Giraud, S. Aswartham, O. Vakaliuk, M. Abdel-Hafiez, C. Hess, S. Wurmehl, A. U. B. Wolter, B. Büchner,
J. Phys.: Condens. Matter 25, 505701 (2013)

Spin pseudogap in Ni-doped SrCuO₂,
G. Simutis, S. Gvasaliya, M. Månsson, A. L. Chernyshev, A. Mohan, S. Singh, C. Hess, A. T. Savici, A. I. Kolesnikov, A. Piovano, T. Perring, I. Zaliznyak, B. Büchner, A. Zheludev,
Phys. Rev. Lett. 111, 067204 (2013)

Low temperature ballistic spin transport in the S = 1∕2 antiferromagnetic Heisenberg chain compound SrCuO₂,
H. Maeter, A. A. Zvyagin, H. Luetkens, G. Pascua, Z. Shermadini, R. Saint-Martin, A. Revcolevschi, C. Hess, B. Büchner, H.-H. Klauss,
J. Phys.: Condens. Matter 25, 365601 (2013)

Evidence of d-wave superconductivity in K_1-xNa_xFe₂As₂ (x = 0, 0.1) single crystals from low-temperature specific-heat measurements,
M. Abdel-Hafiez, V. Grinenko, S. Aswartham, I. Morozov, M. Roslova, O. Vakaliuk, S. Johnston, D. V. Efremov, J. van den Brink, H. Rosner, M. Kumar, C. Hess, S. Wurmehl, A. U. B. Wolter, B. Büchner, E. L. Green, J. Wosnitza, P. Vogt, A. Reifenberger, C. Enss, M. Hempel, R. Klingeler, S.-L. Drechsler,
Phys. Rev. B 87, 180507 (2013)

Role of in-plane and out-of-plane dilution in CeFeAsO: Charge doping versus disorder,
G. Prando, O. Vakaliuk, S. Sanna, G. Lamura, T. Shiroka, P. Bonfà, P. Carretta, R. De Renzi, H.-H. Klauss, C. G. F. Blum, S. Wurmehl, C. Hess, B. Büchner,
Phys. Rev. B 87, 174519 (2013)

Phonon-magnon interaction in low dimensional quantum magnets observed by dynamic heat transport measurements,
M. Montagnese, M. Otter, X. Zotos, D. A. Fishman, N. Hlubek, O. Mitiashkin, C. Hess, R. Saint-Martin, S. Singh, A. Revcolevschi, P. H. M. van Loosdrecht,
Phys. Rev. Lett. 110, 147206 (2013)

Half-metallic ferromagnetism with unexpectedly small spin splitting in the Heusler compound Co₂FeSi,
D. Bombor, C. G. F. Blum, O. Volkonskiy, S. Rodan, S. Wurmehl, C. Hess, B. Büchner,
Phys. Rev. Lett. 110, 066601 (2013)

Interband Quasiparticle Scattering in Superconducting LiFeAs Reconciles Photoemission and Tunneling Measurements,
C. Hess, S. Sykora, T. Hänke, R. Schlegel, D. Baumann, V. B. Zabolotnyy, L. Harnagea, S. Wurmehl, J. van den Brink, B. Büchner,
Phys. Rev. Lett. 110, 017006 (2013)

Structural study of monolayer cobalt phthalocyanine adsorbed on graphite,
M. Scheffler, L. Smykalla, D. Baumann, R. Schlegel, T. Hänke, M. Toader, B. Büchner, M. Hietschold, C. Hess,
Surface Science 608, 55 (2013)

Peculiarities of performance of the spin valve for the superconducting current,
P. V. Leksin, A. A. Kamashev, N. N. Garif’yanov, I. A. Garifullin, Ya. V. Fominov, J. Schumann, C. Hess, V. Kataev, B. Büchner,
JETP Letters, 97, 478 (2013)

Microwave absorption study of pinning regimes in Ba(Fe_1-xCo_x)₂As₂ single crystals,
Y. Talanov, N. Beisengulov, G. Kornilov, T. Shaposhnikova, E. Vavilova, C. Nacke, S. Wurmehl, N. Panarina, C. Hess, V. Kataev, B. Büchner,
Supercond. Sci. Technol. 26, 045015 (2013)

Nernst effect of iron pnictide and cuprate superconductors: signatures of spin density wave and stripe order,
C. Hess, Publication in: New Materials for Thermoelectrics: Theory and Experiment, V. Zlatic and A. Hewson, editors, Proceedings of NATO Advanced Research Workshop, Hvar, Croatia, September 19 -25, 2011, NATO Science for Peace and Security Series B: Physics and Biophysics (Springer Science+Business Media Dordrecht 2013)

Disordered magnetism in superconducting KFe₂As₂ single crystals,
V. Grinenko, S.-L. Drechsler, M. Abdel-Hafiez, S. Aswartham, A. U. B. Wolter, S. Wurmehl, C. Hess, K. Nenkov, G. Fuchs, D. V. Efremov, B. Holzapfel, J. van den Brink, B. Büchner,
Phys. Status Solidi B. 250, 593 (2013)

2012

Magnetic frustration, phase competition, and the magnetoelectric effect in NdFe₃(BO₃)₄,
J. E. Hamann-Borrero, S. Partzsch, S. Valencia, C. Mazzoli, J. Herrero-Martin, R. Feyerherm, E. Dudzik, C. Hess, A. Vasiliev, L. Bezmaternykh, B. Büchner, J. Geck,
Phys. Rev. Lett. 109, 267202 (2012)

Probing local hydrogen impurities in quasi-free-standing graphene,
M. Scheffler, D. Haberer, L. Petaccia, M. Farjam, R. Schlegel, D. Baumann, T. Hänke, A. Grüneis, M. Knupfer, C. Hess, B. Büchner,
ACS Nano 6, 10590 (2012)

Incommensurate magnetic fluctuations and Fermi surface topology in LiFeAs,
J. Knolle, V. B. Zabolotnyy, I. Eremin, S. V. Borisenko, N. Qureshi, M. Braden, D. V. Evtushinsky, T. K. Kim, A. A. Kordyuk, S. Sykora, C. Hess, I. V. Morozov, S. Wurmehl, R. Moessner, B. Büchner,
Phys. Rev. B 86, 174519 (2012)

Hole-doping in BaFe₂As₂: The case of Ba_1-xNa_xFe₂As₂ single crystals,
S. Aswartham, M. Abdel-Hafiez, D. Bombor, M. Kumar, A. U. B. Wolter, C. Hess, D. V. Evtushinsky, V. B. Zabolotnyy, A. A. Kordyuk, T. K. Kim, S. V. Borisenko, G. Behr, B. Büchner, S. Wurmehl,
Phys. Rev. B 85, 224520 (2012)

Specific heat and upper critical fields in KFe₂As₂ single crystals,
M. Abdel-Hafiez, S. Aswartham, S. Wurmehl, V. Grinenko, C. Hess, S.-L. Drechsler, S. Johnston, A. U. B. Wolter, B. Büchner, H. Rosner, L. Boeri,
Phys. Rev. B 85, 134533 (2012)

Gd³⁺ electron spin resonance spectroscopy on LaO_1-xF_xFeAs superconductors,
A. Alfonsov, F. Murányi, N. Leps, R. Klingeler, A. Kondrat, C. Hess, S. Wurmehl, A. Köhler, G. Behr, V. Kataev, B. Büchner,
Journal of Experimental and Theoretical Physics 114, 662 (2012)

Probing the Unconventional Superconducting State of LiFeAs by Quasiparticle Interference,
T. Hänke, S. Sykora, R. Schlegel, D. Baumann, L. Harnagea, S. Wurmehl, M. Daghofer, B. Büchner, J. van den Brink, C. Hess,
Phys. Rev. Lett. 108, 127001 (2012)

Spinon heat transport and spin-phonon interaction in the antiferromagnetic spin-1/2 Heisenberg chain cuprates Sr₂CuO₃ and SrCuO₂,
N. Hlubek, X. Zotos, S. Singh, R. Saint-Martin, A. Revcolevschi, B. Büchner, C. Hess,
J. Stat. Mech. P03006 (2012)

Optical probing of anisotropic heat transport in the quantum spin ladder Ca₉La₅Cu₂₄O₄₁,
M. Otter, G. Athanasopoulos, N. Hlubek, M. Montagnese, M. Labois, D. A. Fishman, F. de Haan, S. Singh, D. Lakehal, J.Giapintzakis, C. Hess, A. Revcolevschi, P. H. M. van Loosdrecht,
International Journal of Heat and Mass Transfer, 55, 2531 (2012)

2011

Bond disorder and breakdown of ballistic heat transport in the spin-1/2 antiferromagnetic Heisenberg chain as seen in Ca-doped SrCuO₂,
N. Hlubek, P. Ribeiro, R. Saint-Martin, S. Nishimoto, A. Revcolevschi, S.-L. Drechsler, G. Behr, J. Trinckauf, J. E. Hamann-Borrero, J. Geck, B. Büchner, C. Hess,
Phys. Rev. B 84, 214419 (2011)

Transport and thermal properties of single- and polycrystalline NiZr_0.5Hf_0.5Sn,
S. Ouardi, G. H. Fecher, C. Felser, C. G. F. Blum, D. Bombor, C. Hess, S. Wurmehl, B. Büchner, E. Ikenaga,
Appl. Phys. Lett. 99, 152112 (2011)

Resistivity and Hall effect of LiFeAs: Evidence for electron-electron scattering,
O. Heyer, T. Lorenz, V.B. Zabolotnyy, D.V. Evtushinsky, S.V. Borisenko, I. Morozov, L. Harnagea, S. Wurmehl, C. Hess, B. Büchner,
Phys. Rev. B 84, 064512 (2011)

Suppressed superconductivity in charge-doped Li(Fe_1-xCo_x)As single crystals,
S. Aswartham, G. Behr, L. Harnagea, D. Bombor, A. Bachmann, I. V. Morozov, V. B. Zabolotnyy, A. A. Kordyuk, T. K. Kim, D. V. Evtushinsky, S. V. Borisenko, A. U. B. Wolter, C. Hess, S. Wurmehl, B. Büchner,
Phys. Rev. B 84, 054534 (2011)

Disorder-induced Spin Gap in the Zigzag Spin-1/2 Chain Cuprate Sr_0.9Ca_0.1CuO₂,
F. Hammerath, S. Nishimoto, H.-J. Grafe, A.U.B. Wolter, V. Kataev, P. Ribeiro, C. Hess, S.-L. Drechsler, B. Büchner,
Phys. Rev. Lett. 107, 17203 (2011)

Raman evidence for the superconducting gap and spin-phonon coupling in the superconductor Ca(Fe_0.95Co_0.05)₂As₂,
P. Kumar, A. Bera, D. V. S. Muthu, A. Kumar, U. V. Waghmare, L. Harnagea, C. Hess, S. Wurmehl, S. Singh, B. Büchner, A. K. Sood,
J. Phys.: Condens. Matter 23, 255403 (2011)

Unusual Nernst effect and spin density wave precursors in superconducting LaFeAsO_1-xF_x,
A. Kondrat, G. Behr, B. Büchner, C. Hess,
Phys. Rev. B 83, 092507 (2011)

Phase diagram of iron-arsenide superconductors Ca(Fe_1-xCo_x)₂As₂ (0 ≤ x ≤ 0.2),
L. Harnagea, S. Singh, G. Friemel, N. Leps, D. Bombor, M. Abdel-Hafiez, A.U.B. Wolter, C. Hess, R. Klingeler, G. Behr, S. Wurmehl, B. Büchner,
Phys. Rev. B 83, 094523 (2011)

High field electron spin resonance spectroscopy study of GdFeAsO_1-xF_x superconductors,
A. Alfonsov, F. Muranyi, V. Kataev, G. Lang, N. Leps, L. Wang, R. Klingeler, A. Kondrat, C. Hess, S. Wurmehl, A. Köhler, G. Behr, S. Hampel, M. Deutschmann, S. Katrych, N. D. Zhigadlo, Z. Bukowski, J. Karpinski, B. Büchner,
Phys. Rev. B 83, 094526 (2011)

Photoemission induced gating of topological insulator,
A. A. Kordyuk, T. K. Kim, V. B. Zabolotnyy, D. V. Evtushinsky, M. Bauch, C. Hess, B. Büchner, H. Berger, S. V. Borisenko,
Phys. Rev. B 83, 081303(R) (2011)

Single crystal growth and physical properties of superconducting ferro-pnictides
Ba(Fe,Co)₂As₂ grown using self-flux and Bridgman techniques,
S. Aswartham, C. Nacke, G. Friemel, N. Leps, S. Wurmehl, N. Wizent, C. Hess, R. Klingeler, G. Behr, S. Singh, B. Büchner,
Journal of Crystal Growth 134, 341 (2011)

2010

Plasmons and interband transitions of Ca₁₁Sr₃Cu₂₄O₄₁ investigated by electron energy-loss spectroscopy,
F. Roth, C. Hess, B. Büchner, U. Ammerahl, A. Revcolevschi, M. Knupfer,
Phys. Rev. B 82, 245110 (2010)

Crystal and magnetic structure of the oxypnictide superconductor LaFeAsO_1-xF_x: A neutron-diffraction study,
N. Qureshi, Y. Drees, J. Werner, S. Wurmehl, C. Hess, R. Klingeler, B. Büchner, M. T. Fernandez-Diaz, M. Braden,
Phys. Rev. B 82, 184521 (2010)

Nernst effect of stripe ordering La_1.8-xEu_0.2Sr_xCuO₄,
C. Hess, E.M. Ahmed, U. Ammerahl, A. Revcolevschi, B. Büchner
Eur. Phys. J. - Special Topics 188, 103 (2010)

Single crystal growth and characterization of superconducting LiFeAs,
I. Morozov, A. Boltalin, O. Volkova, A. Vasiliev, O. Kataeva, U. Stockert, M. Abdel-Hafiez, D. Bombor, A. Bachmann, L. Harnagea, M. Fuchs, H.-J. Grafe, G. Behr, R. Klingeler, S. Borisenko, C. Hess, S. Wurmehl, B. Büchner,
Cryst. Growth Des. 10, 4428 (2010)

Bridging Charge-Orbital Ordering and Fermi Surface Instabilities in Half-Doped Single-Layered Manganite La_0.5Sr_1.5MnO₄,
D. V. Evtushinsky, D. S. Inosov, G. Urbanik, V. B. Zabolotnyy, R. Schuster, P. Sass, T. Hänke, C. Hess, B. Büchner, R. Follath, P. Reutler, A. Revcolevschi, A. A. Kordyuk, S. V. Borisenko,
Phys. Rev. Lett. 105, 147201 (2010)

Non-Resonant X-ray Magnetic Scattering on Rare-Earth Iron Borates RFe₃(BO₃)₄,
J.E. Hamann-Borrero, M. Philipp, O. Kataeva, M. v. Zimmermann, J. Geck, R. Klingeler, A. Vasiliev, L. Bezmaternykh, B. Büchner, C. Hess,
Phys. Rev. B 82, 094411 (2010)

Magnetodielectric and magnetoelastic coupling in TbFe₃(BO₃)₄,
U. Adem, L. Wang, D. Fausti, W. Schottenhamel, P. H. M. van Loosdrecht, A. Vasiliev, L. N. Bezmaternykh, B. Büchner, C. Hess, R. Klingeler
Phys. Rev. B 82, 064406 (2010)

Critical current and vortex dynamics in single crystals of Ca(Fe_1-xCo_x)₂As₂,
A. K. Pramanik, L. Harnagea, S. Singh, S. Aswartham, G. Behr, S. Wurmehl, C. Hess, R. Klingeler, B. Büchner
Phys. Rev. B 82, 014503 (2010)

Pinning effects in ceramic SmO_1-xF_xFeAs as revealed by microwave absorption,
N. Y. Panarina, Y. I. Talanov, T. S. Shaposhnikova, N. R. Beysengulov, E. Vavilova, G. Behr, A. Kondrat, C. Hess, N. Leps, S. Wurmehl, R. Klingeler, V. Kataev, B. Büchner,
Phys. Rev. B 81, 224509 (2010)

Observation of the Fermi surface, the band structure, and their diffraction replicas of Sr_14-xCa_xCu₂₄O₄₁ by angle-resolved photoemission spectroscopy,
A. Koitzsch, D. S. Inosov, H. Shiozawa, V. B. Zabolotnyy, S. V. Borisenko, A. Varykhalov, C. Hess, M. Knupfer, U. Ammerahl, A. Revcolevschi, B. Büchner,
Phys. Rev. B 81, 113110 (2010)

Thermal conductivity of the spin-Peierls compounds TiOCl and TiOBr,
N. Hlubek, M. Sing, S. Glawion, R. Claessen, S. van Smaalen, P.H.M. van Loosdrecht, B. Büchner, C. Hess,
Phys. Rev. B 81, 144428 (2010)

Graphene Synthesis on Cubic SiC/Si Wafers - Perspectives for Mass Production of Graphene-based Electronic Devices,
V. Y. Aristov, G. Urbanik, K. Kummer, D. V. Vyalikh, O. V. Molodtsova, A. B. Preobrajenski, C. Hess, T. Hänke, B. Büchner, I. Vobornik, J. Fujii, G. Panaccione, Y.A. Ossipyan, M. Knupfer,
Nano Lett. 10, 992 (2010)

Ballistic heat transport of quantum spin excitations as seen in SrCuO₂,
N. Hlubek, P. Ribeiro, R. Saint-Martin, A. Revcolevschi, G. Roth, G. Behr, B. Büchner, C. Hess,
Phys. Rev. B 81, 020301(R) (2010)

Local antiferromagnetic correlations in the iron pnictide superconductors LaFeAsO_1-xF_x and Ca(Fe_1-xCo_x)₂As₂ as seen via normal-state susceptibility,
R. Klingeler, N. Leps, I. Hellmann, A. Popa, U. Stockert, C. Hess, V. Kataev, H.-J. Grafe, F. Hammerath, G. Lang, S. Wurmehl, G. Behr, L. Harnagea, S. Singh, B. Büchner
Phys. Rev. B 81, 024506 (2010)

Thermal expansion of RFeAsO (R=La,Ce,Pr,Sm,Gd),
R. Klingeler, L. Wang, U. Köhler, G. Behr, C. Hess, B. Büchner,
J. Phys.: Conf. Ser. 200, 012088 (2010)

Microwave absorption study of polycrystalline SmO_1-xF_xFeAs,
N.Y. Panarina, Y.I. Talanov, T.S. Shaposhnikova, N.R. Beysengulov, E.L. Vavilova, V. Kataev, G. Behr, A. Kondrat, C. Hess, N. Leps, R. Klingeler, B. Büchner,
J. Phys.: Conf. Ser. 200, 12154 (2010)

High Field ESR Spectroscopy on GdO_1-xF_xFeAs,
A. Alfonsov, F. Murányi, V. Kataev, N. Leps, R. Klingeler, A. Kondrat, C. Hess, J. Werner, G. Behr, B. Büchner,
J. Low Temp. Phys. 159, 172 (2010)

2009

Iron-based superconductors: Vital clues from a basic compound,
B. Büchner, C. Hess,
Nature Materials – News and Views 8, 615 (2009)

1-(alpha-Aminobenzyl)-2-naphthol: A new chiral auxiliary for the synthesis of enantiopure - aminophosphonic acids,
K.E. Metlushka, B.A. Kashemirov, V.F. Zheltukhin, D.N. Sadkova, B. Büchner, C. Hess, O.N. Kataeva, C.E. McKenna, V.A. Alfonsov,
Chemistry - A European Journal 15, 6718 (2009)

Imaging the essential role of spin-fluctuations in high-T_c superconductivity,
N. Jenkins, Y. Fasano, C. Berthod, I. Maggio-Aprile, A. Piriou, E. Giannini, B. W. Hoogenboom, C. Hess, T. Cren, Ø. Fischer,
Phys. Rev. Lett. 103, 227001 (2009)

Highly ordered, half-metallic Co₂FeSi single crystals,
C. G. F. Blum, C. A. Jenkins, J. Barth, C. Felser, S. Wurmehl, G. Friemel, C. Hess, G. Behr, B. Büchner, A. Reller, S. Riegg, S. G. Ebbinghaus, T. Ellis, P. J. Jacobs, J. T. Kohlhepp, H. J. M. Swagten,
Appl. Phys. Lett. 95, 161903 (2009)

Thermal expansion of LaFeAsO: Evidence for high-temperature fluctuations ,
L. Wang, U. Köhler, N. Leps, A. Kondrat, M. Nale, A. Gasparini, A. de Visser, G. Behr, C. Hess, R. Klingeler, B. Büchner,
Phys. Rev. B 80, 094512 (2009)

Interplay of rare earth and iron magnetism in RFeAsO (R = La, Ce, Pr, and Sm): Muon-spin relaxation study and symmetry analysis,
H. Maeter, H. Luetkens, Yu. G. Pashkevich, A. Kwadrin, R. Khasanov, A. Amato, A. A. Gusev, K. V. Lamonova, D. A. Chervinskii, R. Klingeler, C. Hess, G. Behr, B. Büchner, H.-H. Klauss,
Phys. Rev. B 80, 094524 (2009)

Andreev spectroscopy of LaFeAsO_0.9F_0.1,
Ya. G. Ponomarev, S. A. Kuzmichev, M. G. Mikheev, M. V. Sudakova, S. N. Tchesnokov, O. S. Volkova, and A. N. Vasiliev, T. Hänke, C. Hess, G. Behr, R. Klingeler, B. Büchner,
Phys. Rev. B 79, 224517 (2009)

Temperature and Doping-Dependent Renormalization Effects of the Low Energy Electronic Structure of Ba_1-xK_xFe₂As₂ Single Crystals,
A. Koitzsch, D. S. Inosov, D. V. Evtushinsky, V. B. Zabolotnyy, A. A. Kordyuk, A. Kondrat, C. Hess, M. Knupfer, B. Büchner, G. L. Sun, V. Hinkov, C. T. Lin, A. Varykhalov, S. V. Borisenko,
Phys. Rev. Lett. 102, 167001 (2009)

The intrinsic electronic phase diagram of iron-oxypnictide superconductors,
C. Hess, A. Kondrat, A. Narduzzo, J. E. Hamann-Borrero, R. Klingeler, J. Werner, G. Behr, B. Büchner,
Europhys. Lett. 87, 17005 (2009)

Synthesis and physical properties of LaO_1-xF_xFeAs,
A. Kondrat, J. E. Hamann-Borrero, N. Leps, M. Kosmala, O. Schumann, J. Werner, G. Behr, M. Braden, R. Klingeler, B. Büchner, C. Hess,
Eur. Phys. J. B 70, 461 (2009)

Electronic phase diagram of the LaO_1-xF_xFeAs superconductor,
H. Luetkens, H.-H. Klauss, M. Kraken, F. J. Litterst, T. Dellmann, R. Klingeler, C. Hess, R. Khasanov, A. Amato, C. Baines, J. Hamann-Borrero, N. Leps, A. Kondrat, G. Behr, J. Werner, B. Büchner,
Nature Materials 8, 305 (2009)

Surface of underdoped YBa₂Cu₃O_7-δ as revealed by STM/STS,
G. Urbanik, T. Hänke, C. Hess, B. Büchner, A. Ciszewski, V. Hinkov, C.T. Lin, B. Keimer,
Eur. Phys. J. B 69, 483 (2009)

2008

Optical study of LaO_0.9F_0.1FeAs: Evidence for a Weakly Coupled Superconducting State,
S.-L. Drechsler, M. Grobosch, K. Koepernik, G. Behr, A. Köhler, J. Werner, A. Kondrat, N. Leps, C. Hess, R. Klingeler, R. Schuster, B. Büchner, M. Knupfer,
Phys. Rev. Lett. 101, 257004 (2008)

High-Field Pauli-Limiting Behavior and Strongly Enhanced Upper Critical Magnetic Fields near the Transition Temperature of an Arsenic-Deficient LaO_0.9F_0.1FeAs_1-δ Superconductor,
G. Fuchs, S. -L. Drechsler, N. Kozlova, G. Behr, A. Köhler, J. Werner, K. Nenkov, C. Hess, R. Klingeler, J. E. Hamann-Borrero, A. Kondrat, M. Grobosch, M. Knupfer, J. Freudenberger, B. Büchner, L. Schultz,
Phys. Rev. Lett. 101, 237003 (2008)

Magnetic Ordering and Negative Thermal Expansion in PrFeAsO,
S. A. J. Kimber, D. N. Argyriou, F. Yokaichiya, K. Habicht, S. Gerischer, T. Hansen, T. Chatterji, R. Klingeler, C. Hess, G. Behr, A. Kondrat, B. Büchner,
Phys. Rev. B 78, 140503 (2008)

Crossover in charge transport from one-dimensional copper-oxygen chains to two-dimensional ladders in (La,Y)_y(Sr,Ca)_14-yCu₂₄O₄₁,
T. Ivek and T. Vuletic, B. Korin-Hamzic, O. Milat, S. Tomic, B. Gorshunov, M. Dressel, J. Akimitsu, Y. Sugiyama, C. Hess, B. Büchner,
Phys. Rev. B 78, 205105 (2008)

Field and Temperature Dependence of the Superfluid Density in LaO_1-xF_xFeAs Superconductors: A Muon Spin Relaxation Study,
H. Luetkens, H.-H. Klauss, Khasanov, A. Amato, Klingeler, I. Hellmann, N. Leps, A. Kondrat, C. Hess, A. Köhler, G. Behr, J. Werner, B. Büchner,
Phys. Rev. Lett. 101, 097009 (2008)

Commensurate Spin Density Wave in LaOFeAs: A Local Probe Study,
H.-H. Klauss, H. Luetkens, R. Klingeler, C. Hess, F.J. Litterst, M. Kraken, M.M. Korshunov, I. Eremin, S.-L. Drechsler, R. Khasanov, A. Amato, J. E. Hamann-Borrero, N. Leps, A. Kondrat, G. Behr, J. Werner, B. Büchner,
Phys. Rev. Lett. 101, 077005 (2008)

⁷⁵As NMR studies of superconducting LaO_0.9F_0.1FeAs,
H.-J. Grafe, D. Paar, G. Lang, N. J. Curro, G. Behr, J. Werner, J. Hamann-Borrero, C. Hess, N. Leps, R. Klingeler, B. Büchner,
Phys. Rev. Lett. 101, 047003 (2008)

Upper critical field, penetration depth and depinning frequency of the novel high-temperature superconductor LaO_0.9F_0.1FeAs studied by microwave surface impedance,
A. Narduzzo, M. S. Grbić, M. Požek, A. Dulčić, D. Paar, A. Kondrat, C. Hess, I. Hellmann, R. Klingeler, J. Werner, A. Köhler, G. Behr, B. Büchner,
Phys. Rev. B 78, 012507 (2008)

ScRe₂O₆: A new ternary oxide with metallic Re-Re-bonds and a ferromagnetic component above room temperature,
D. Mikhailova, H. Ehrenberg, G. Miehe, D. Trots, C. Hess, R. Schneider, H. Fuess,
J. Solid State Chem. 181, 190 (2008)

2007

Linear Temperature Dependence of the Magnetic Heat Conductivity in CaCu₂O₃,
C. Hess, H. ElHaes, A. Waske, B. Büchner, C. Sekar, G. Krabbes, F. Heidrich-Meisner, W. Brenig,
Phys. Rev. Lett. 98, 027201 (2007)

One- and two-triplon spectra of a cuprate ladder,
S. Notbohm, P. Ribeiro, B. Lake, D.A. Tennant, K.P. Schmidt, G.S. Uhrig, C. Hess, R. Klingeler, G. Behr, B. Büchner, M. Reehuis, R.I. Bewley, C.D. Frost, P. Manuel, R.S. Eccleston,
Phys. Rev. Lett. 98, 27403 (2007)

Magnetization and specific heat of TbFe₃(BO₃)₄: Experiment and crystal-field calculations,
E.A. Popova, D.V. Volkov, A.N. Vasiliev, A.A. Demidov, N.P. Kolmakova, I.A. Gudim, L.N. Bezmaternykh, N. Tristan, Yu. Skourski, B. Büchner, C. Hess, R. Klingeler,
Phys. Rev. B 75, 224413 (2007)

Heat conduction in low-dimensional quantum magnets,
C. Hess,
Eur. Phys. J. - Special Topics 151, 73 (2007)

Thermodynamic properties of NdFe₃(BO₃)₄,
N. Tristan, R. Klingeler, C. Hess, B. Büchner, E. Popova, I.A. Gudimc, L.N. Bezmaternykh,
J. Magn. Magn. Mater. 316, e621 (2007)

Magnon-hole scattering in La_2-xSr_xCuO₄,
C. Hess, B. Büchner,
J. Magn. Magn. Mater. 310, e412 (2007)

The low-dimensional spin magnet CaCu₂O₃ probed by high-field ESR,
V. Kataev, U. Schaufuss, M. Goiran, R. Klingeler, C. Sekar, G. Krabbes, N. Tristan, A. Waske, C. Hess, S.-L. Drechsler, B. Büchner,
J. Magn. Magn. Mater 310, 1251 (2007)

Thermal conductivity of underdoped YBa₂Cu₃O_y,
A. Waske, C. Hess, B. Büchner, V. Hinkov, C.T. Lin,
Physica C 460-462, 746 (2007)

Magnetization of undoped 2-leg S = 1∕2 spin ladders in La₄Sr₁₀Cu₂₄O₄₁,
R. Klingeler, I. Hellmann, P. Ribeiro, C. Hess, B. Büchner,
Physica C 460-462, 464 (2007)

Spectroscopic investigations on layered sodium cobaltates,
T. Kroll, A.A. Aligia, M. Knupfer, J. Geck, C. Hess, T. Schwieger, G. Krabbes, C. Sekar, D.R. Batchelor, H. Berger, G.A. Sawatzky, B. Büchner,
Physica C 460-462, 487 (2007)

Magnetic and thermal properties of single-crystal NdFe₃(BO₃)₄,
E.A. Popova, N. Tristan, C. Hess, R. Klingeler, B. Büchner, L.N. Bezmaternykh, V.L. Temerov, A.N. Vasiliev,
Journal of Experimental and Theoretical Physics 105, 105 (2007)

2006

X-ray absorption spectroscopy of Na_xCoO₂ layered cobaltates,
T. Kroll, M. Knupfer, J. Geck, C. Hess, T. Schwieger, G. Krabbes, C. Sekar, D.R. Batchelor, H. Berger, B. Büchner,
Phys. Rev. B 74, 115123 (2006)

Magnon heat conductivity and mean free paths in two-leg spin ladders: A model-independent determination,
C. Hess, P. Ribeiro, B. Büchner, H. ElHaes, G. Roth, U. Ammerahl, A. Revcolevschi,
Phys. Rev. B 73, 104407 (2006)

First Scanning Tunneling Spectroscopy on Bi₂Sr₂Ca₂Cu₃O_10+δ single crystals,
M. Kugler, G. Levy de Castro, E. Giannini, A. Piriou, A.A. Manuel, C. Hess, Ø. Fischer,
J. Phys. Chem. Solids 67, 353 (2006)

2005

Scattering Processes and Magnon Thermal Conductivity in La₅Ca₉Cu₂₄O₄₁,
C. Hess, C. Baumann, B. Büchner,
J. Magn. Magn. Mater. 290-291, 322 (2005)

Heat Transport in Doped SrCuO₂,
P. Ribeiro, C. Hess, P. Reutler, G. Roth, B. Büchner,
J. Magn. Magn. Mater. 290-291, 334 (2005)

Phonon thermal conductivity in single layered manganites,
C. Baumann, C. Hess, P. Reutler, B. Büchner, A. Revcolevschi,
J. Magn. Magn. Mater. 290-291, 937 (2005)

Phase diagrams of (La,Y,Sr,Ca)₁₄Cu₂₄O₄₁: Switching between the ladders and the chains,
T. Vuletić, T. Ivek, B. Korin-Hamzić, S. Tomić, B. Gorshunov, M. Dressel, C. Hess, B. Büchner, J. Akimitsu,
J. Phys. IV 131, 299 (2005)

2004

Magnon-Hole Scattering and Charge Order in Sr_14-xCa_xCu₂₄O₄₁,
C. Hess, H. ElHaes, B. Büchner, U. Ammerahl, M. Hücker, A. Revcolevschi,
Phys. Rev. Lett. 93, 027005 (2004)

Thermal conductivity of doped La₂CuO₄ as an example for heat transport by optical phonons in complex materials,
C. Hess, B. Büchner,
Eur. Phys. J. B 38, 37 (2004)

2003

Phonon thermal conductivity in doped La₂CuO₄: relevant scattering mechanisms,
C. Hess, B. Büchner, U. Ammerahl, A. Revcolevschi,
Phys. Rev. B 68, 184517 (2003)

Magnon Heat Transport in Doped La₂CuO₄,
C. Hess, B. Büchner, U. Ammerahl, L. Colonescu, F. Heidrich-Meisner, W. Brenig, A. Revcolevschi,
Phys. Rev. Lett. 90, 197002 (2003)

2002

Anisotropic CE-type orbital correlations in the ferromagnetic metallic phase of Nd_0.5Sr_0.5MnO₃,
J. Geck, D. Bruns, C. Hess, R. Klingeler, P. Reutler, M. v. Zimmermann, S.-W. Cheong, B. Büchner,
Phys. Rev. B 66, 184407 (2002)

Magnon hole scattering in (Sr,Ca,La)₁₄Cu₂₄O₄₁,
C. Hess, U. Ammerahl, C. Baumann, B. Büchner, A. Revcolevschi,
Physica B 312-313, 612 (2002)

2001

Magnon heat transport in (Sr,Ca,La)₁₄Cu₂₄O₄₁,
C. Hess, C. Baumann, U. Ammerahl, B. Büchner, F. Heidrich-Meisner, W. Brenig, A. Revcolevschi,
Phys. Rev. B 64, 184305 (2001)

2000

Thermal and Electronic Transport Properties and Two-Phase Mixtures in
La_5∕8-xPr_xCa_3∕8MnO₃,
K-H. Kim, M. Uehara, C. Hess, P.A. Sharma, S.-W. Cheong,
Phys. Rev. Lett. 84, 2961 (2000)

1999

Phonon thermal conductivity and stripe correlations in La_2-xSr_xNiO₄ and Sr_1.5La_0.5MnO₄,
C. Hess, B. Büchner, M. Hücker, R. Gross, S.-W. Cheong,
Phys. Rev. B 59, R10397 (1999)

Phonon thermal conductivity of stripe ordering La_2-xSr_xNiO₄, D. Cassel, C. Hess, B. Büchner, M. Hücker, R. Gross, O. Friedt, S.-W. Cheong,
J. Low Temp. Phys. 117, 1083 (1999)

1996

Excited levels in ¹⁴⁵Pm,
W. Urban, T. Rzaca-Urban, J.L. Durell, C. Hess, C.J. Pearson, W.R. Phillips, B.J. Varley, W.J. Vermeer, Ch. Vieu and J.S. Dionisio, M. Pautrat, J.C. Bacelar,
Phys. Rev. C 54, 2264 (1996)

1995

Study of the high-spin structure of ¹⁴⁶Pm,
T. Rzaca-Urban, W. Urban, J.L. Durell, W.R. Phillips, B.J. Varley, C. Hess, C.J. Pearson, W.J. Vermeer, Ch. Vieu, J.S. Dionisio, M. Pautrat, J.C. Bacelar,
Nuclear Physics A 588, 767 (1995)

Study of excited levels in ¹⁴⁷Pm,
W. Urban, J.L. Durell, W.R. Phillips, B.J. Varley, C. Hess, M.A. Jones, C.J. Pearson, W.J. Vermeer, Ch. Vieu, J.S. Dionisio, M. Pautrat, J.C. Bacelar,
Nuclear Physics A 587, 541 (1995)