Magnetic-field dependence of the YbRh2Si2 Fermi surface.
Phys Rev Lett
; 101(23): 237205, 2008 Dec 05.
Article
em En
| MEDLINE
| ID: mdl-19113590
ABSTRACT
Magnetic-field-induced changes of the Fermi surface play a central role in theories of the exotic quantum criticality of YbRh2Si2. We have carried out de Haas-van Alphen measurements in the magnetic-field range 8 T < or = H < or = 16 T, and directly observe field dependence of the extremal Fermi surface areas. Our data support the theory that a low-field "large" Fermi surface, including the Yb 4f quasihole, is increasingly spin split until a majority-spin branch undergoes a Lifshitz transition and disappears at H0 approximately 10 T, without requiring 4f localization at H0.
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MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Ano de publicação:
2008
Tipo de documento:
Article
País de afiliação:
Canadá