Verification of the Wiedemann-Franz law in YbRh2Si2 at a quantum critical point.
Phys Rev Lett
; 110(23): 236402, 2013 Jun 07.
Article
en En
| MEDLINE
| ID: mdl-25167518
ABSTRACT
The thermal conductivity measurements are performed on the heavy-fermion compound YbRh(2)Si(2) down to 0.04 K and under magnetic fields through a quantum critical point (QCP) at B(c)=0.66 Tâ¥c axis. In the limit as Tâ0, we find that the Wiedemann-Franz law is satisfied within experimental error at the QCP despite the destruction of the standard signature of Fermi liquid. Our results place strong constraints on models that attempt to describe the nature of the unconventional quantum criticality of YbRh(2)Si(2).
Buscar en Google
Base de datos:
MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Año:
2013
Tipo del documento:
Article