Non-Fermi liquid state bounded by a possible electronic topological transition in ZrZn 2

Noriyuki Kabeya, Hirotaka Maekawa, Kazuhiko Deguchi, Noriaki Kimura, Haruyoshi Aoki, Noriaki K. Sato

Research output: Contribution to journalReview articlepeer-review

19 Citations (Scopus)

Abstract

We report high-precision magnetic and transport measurements of ZrZn 2 and present a phase diagram as a function of pressure and magnetic field. The paramagnetic phase is found to be divided into two regions at T ≃ 0 by a possible electronic topological transition (i.e., a non-symmetry breaking transition) known as the Lifshitz transition, and the two regions are characterized by Fermi and non-Fermi liquid behaviors. These results strongly suggest that the non-Fermi liquid state exists as a stable phase distinguished from the Fermi liquid by the Fermi surface topology. As a possible origin of the non-Fermi liquid behavior, an antiferromagnetic fluctuation arising from the Fermi surface nesting is discussed.

Original languageEnglish
Article number073706
Journaljournal of the physical society of japan
Volume81
Issue number7
DOIs
Publication statusPublished - 2012 Jul

Keywords

  • Electronic topological transition
  • Lifshitz transition
  • Metamagnetism
  • Non-Fermi liquid
  • ZrZn

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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