Document type:
Zeitschriftenaufsatz
Author(s):
v. L̈ohneysen, H.; Pfleiderer, C.; Pietrus, T.; Stockert, O.; Will, B.
Title:
Pressure versus Magnetic-Field Tuning of a Magnetic Quantum Phase Transition
Abstract:
Specific heat C(T) and electrical resistivity $̊ho$(T) of CeCu6-xAux at very low temperatures T show distinctly different behavior depending on whether long-range antiferromagnetic order is suppressed by hydrostatic pressure p or an applied magnetic field B. p tuning yields C/T=aln(T0/T) and $̊ho\approx̊ho$0+A$′$T, while B tuning shows C/T=$\gamma$0-a$′$T0.5 and $̊ho\approx̊ho$0+A''T1.5. This suggests that the spectrum of low-lying excitations that determines the behavior near these quantum phas...    »

Journal title:
Physical Review B
Year:
2001
Journal volume:
63
Month:
mar
Journal issue:
13
Pages contribution:
134411
Fulltext / DOI: