Custers, J., Gegenwart, P., Geibel, C., Steglich, F., Coleman, P. and Paschen, S. (2010) Evidence for a Non-Fermi-Liquid Phase in Ge-Substituted YbRh2Si2. Physical Review Letters, 104 (18).
Full text access: Open
The canonical view of heavy fermion quantum criticality assumes a single quantum critical point separating the paramagnet from the antiferromagnet. However, recent experiments on Yb-based heavy fermion compounds suggest the presence of non-Fermi liquid behavior over a finite zero-temperature region. Using detailed susceptibility and transport measurements we show that the classic quantum critical system, Ge-substituted YbRh2Si2, also displays such behavior. We advance arguments that this is not due to a disorder-smeared quantum critical point, but represents a new class of metallic phase.
This is a Submitted version This version's date is: 7/5/2010 This item is not peer reviewed
https://repository.royalholloway.ac.uk/items/4525d956-e2f1-fdc6-aad7-f2fefbc96bc8/1/
Deposited by Research Information System (atira) on 13-Jun-2012 in Royal Holloway Research Online.Last modified on 13-Jun-2012