Magnetic-Field Dependence of the YbRh2Si2 Fermi Surface

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 <= H <= 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 ~ 10 T, without requiring 4f localization at H0.

4 pages, 5 figures, 1 table

References in corpus (3)

• Quantum Criticality in Heavy Fermion Metals
• Mean Field study of the heavy fermion metamagnetic transition
• Coherence and metamagnetism in the two-dimensional Kondo lattice model

Cited by in corpus (6)

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• Hall effect in heavy-fermion metals
• Magnetic Polarization and Fermi Surface Instability: Case of YbRh2Si2
• New Universality Class of Quantum Criticality in Ce- and Yb-based Heavy Fermions
• Magnetization study of the energy scales in YbRh${}_2$Si${}_2$ under chemical pressure
• Localized moments and the stability of antiferromagnetic order in Yb3Pt4