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Pressure-induced change of the pairing symmetry in superconducting CeCu2Si2
E. Lengyel, M. Nicklas, H. S. Jeevan +5
Low-temperature (T) heat-capacity measurements under hydrostatic pressure of up to p=2.1 GPa have been performed on single-crystalline CeCu2Si2. A broad superconducting (SC) region…
Huge Thermoelectric Power Factor: FeSb2 versus FeAs2 and RuSb2
Peijie Sun, Niels Oeschler, Simon Johnsen +2
The thermoelectric power factor of the narrow-gap semiconductor FeSb2 is greatly enhanced in comparison to the isostructural homologues FeAs2 and RuSb2. Comparative studies of magn…
Quantum criticality in layered CeRhIn_{5-x}Sn_x compared with cubic CeIn$_{3-x}Sn_x
J. G. Donath, F. Steglich, E. D. Bauer +3
We report low-temperature thermal-expansion measurements on single crystals of the {\it layered} heavy fermion system \cri () and compare it with a previous stu…
Violation of critical universality at the antiferromagnetic phase transition of YbRh2Si2
C. Krellner, S. Hartmann, A. Pikul +5
We report on precise low-temperature specific-heat measurements, C(T), of YbRh2Si2 in the vicinity of the antiferromagnetic phase transition on a single crystal of superior quality…
Phase transitions and rare-earth magnetism in hexagonal and orthorhombic DyMnO single crystals
S Harikrishnan, S Roessler, C M Naveen Kumar +5
The floating-zone method with different growth ambiances has been used to selectively obtain hexagonal or orthorhombic DyMnO single crystals. The crystals were characterized…