Publications (6)
Quantum Criticality in doped CePd_1-xRh_x Ferromagnet
J. G. Sereni, T. Westerkamp, R. Kuechler +3
CePd_1-xRh_x alloys exhibit a continuous evolution from ferromagnetism (T_C= 6.5 K) at x = 0 to a mixed valence (MV) state at x = 1. We have performed a detailed investigation on t…
Multiple energy scales at a quantum critical point
P. Gegenwart, T. Westerkamp, C. Krellner +6
We report thermodynamic measurements in a magnetic-field-driven quantum critical point of a heavy fermion metal, YbRhSi. The data provide evidence for an energy scale in th…
Quantum Griffiths phase in CePd(1-x)Rh(x) with x ~ 0.8
M. Brando, T. Westerkamp, M. Deppe +3
The magnetic field dependence of the magnetisation () and the temperature dependence of the ac susceptibility () of CePd(1-x)Rh(x) single crystals with $0.80 \leq x…
Kondo-Cluster-Glass State near a Ferromagnetic Quantum Phase Transition
T. Westerkamp, M. Deppe, R. Kuechler +5
We report on a comprehensive study of CePdRh poly- and single crystals close to the ferromagnetic instability by means of low-temperature ac su…
Interplay between Kondo suppression and Lifshitz transitions in YbRhSi at high magnetic fields
H. Pfau, R. Daou, S. Lausberg +11
We investigate the magnetic field dependent thermopower, thermal conductivity, resistivity and Hall effect in the heavy fermion metal YbRh2Si2. In contrast to reports on thermodyna…
Break up of heavy fermions at an antiferromagnetic instability
S. Friedemann, S. Wirth, S. Kirchner +7
We present results of high-resolution, low-temperature measurements of the Hall coefficient, thermopower, and specific heat on stoichiometric YbRh2Si2. They support earlier conclus…