activity
20062013
most citedMultiple energy scales at a quantum critical point

220 citations · 539 across the 8 of their papers we have counts for

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8 papers · 1 filter

cond-mat.str-el2013★ 13 cited

Magnetization study of the energy scales in YbRhSi under chemical pressure

Manuel Brando, Luis Pedrero, Tanja Westerkamp +4

We present a systematic study of the magnetization in YbRhSi under slightly negative (6?% Ir substitution) and positive (7% Co substitution) chemical pressure. We show…

cond-mat.str-el2013★ 67 cited

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…

cond-mat.str-el2011★ 38 cited

Single crystal growth of YbRh2Si2 and YbIr2Si2

Cornelius Krellner, Sebastian Taube, Tanja Westerkamp +2

We report on the single crystal growth of the heavy-fermion compounds YbRh2Si2 and YbIr2Si2 using a high-temperature indium-flux technique. The optimization of the initial composit…

cond-mat.str-el2010★ 10 cited

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…

cond-mat.str-el2009★ 14 cited

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…

cond-mat.str-el2009★ 122 cited

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…

cond-mat.str-el2006★ 220 cited

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…

cond-mat.str-el2006★ 55 cited

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…