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Hall-effect evolution across a heavy-fermion quantum critical point
S. Paschen, T. Luhmann, S. Wirth +6
A quantum critical point (QCP) develops in a material at absolute zero when a new form of order smoothly emerges in its ground state. QCPs are of great current interest because of…
Pronounced enhancement of the lower critical field and critical current deep in the superconducting state of PrOsSb
T. Cichorek, A. C. Mota, F. Steglich +3
We have observed an unexpected enhancement of the lower critical field and the critical current deep in the superconducting state below K ($T…
Superconductivity in heavy fermion compounds
P. Thalmeier, G. Zwicknagl, O. Stockert +2
We review the current state of experimental and theoretical investigations of heavy fermion superconductors. We discuss most of the Ce-based compounds like Ce122, Ce115, Ce218 and…
Effect of hydrostatic pressure on the ambient pressure superconductor CePt_3Si
M. Nicklas, G. Sparn, R. Lackner +2
We studied the evolution of superconductivity (sc) and antiferromagnetism (afm) in the heavy fermion compound CePt_3Si with hydrostatic pressure. We present a pressure-temperature…
Grueneisen Ratio Divergence at the Quantum Critical Point in CeCu_{6-x}Ag_x
R. Kuechler, P. Gegenwart, K. Heuser +3
The heavy fermion system CeCuAg is studied at its antiferromagnetic quantum critical point, , by low temperature ( mK) specific heat, , and vol…
Scaling of the magnetic entropy and magnetization in YbRh_2(Si_{0.95}Ge_{0.05})_2
P. Gegenwart, Y. Tokiwa, K. Neumaier +2
The magnetic entropy of YbRh_2(Si_{0.95}Ge_{0.05})_2 is derived from low-temperature ( mK) specific heat measurements. Upon field-tuning the system to its antiferromagnet…