Zeeman-Driven Lifshitz Transition: A Model for the Experimentally Observed Fermi-Surface Reconstruction in YbRh2Si2

Andreas Hackl and Matthias Vojta
Phys. Rev. Lett. 106, 137002 – Published 29 March 2011

Abstract

The heavy-fermion metal YbRh2Si2 displays a field-driven quantum phase transition where signatures of a Fermi-surface reconstruction have been identified, often interpreted as a breakdown of the Kondo effect. We argue that instead many properties of the material can be consistently described by assuming a Zeeman-driven Lifshitz transition of narrow heavy-fermion bands. Using a suitable quasiparticle model, we find a smeared jump in the Hall constant and lines of maxima in susceptibility and specific heat, very similar to experimental data. An intermediate non-Fermi-liquid regime emerges due to the small effective Fermi energy near the transition. Further experiments to discriminate the different scenarios are proposed.

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  • Received 10 December 2010

DOI:https://doi.org/10.1103/PhysRevLett.106.137002

© 2011 American Physical Society

Authors & Affiliations

Andreas Hackl1 and Matthias Vojta2

  • 1Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
  • 2Institut für Theoretische Physik, Technische Universität Dresden, 01062 Dresden, Germany

Comments & Replies

Comment on “Zeeman-Driven Lifshitz Transition: A Model for the Experimentally Observed Fermi-Surface Reconstruction in YbRh2Si2

V. R. Shaginyan, M. Ya. Amusia, J. W. Clark, A. Z. Msezane, K. G. Popov, M. V. Zverev, and V. A. Khodel
Phys. Rev. Lett. 107, 279701 (2011)

Comment on “Zeeman-Driven Lifshitz Transition: A Model for the Experimentally Observed Fermi-Surface Reconstruction in YbRh2Si2

S. Friedemann, S. Paschen, C. Geibel, S. Wirth, F. Steglich, S. Kirchner, E. Abrahams, and Q. Si
Phys. Rev. Lett. 111, 139701 (2013)

Hackl and Vojta Reply:

Andreas Hackl and Matthias Vojta
Phys. Rev. Lett. 107, 279702 (2011)

Hackl and Vojta Reply:

Andreas Hackl and Matthias Vojta
Phys. Rev. Lett. 111, 139702 (2013)

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Vol. 106, Iss. 13 — 1 April 2011

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