Catastrophic fermi surface reconstruction in the shape-memory alloy AuZn

P. A. Goddard, J. Singleton, R. D. McDonald, N. Harrison, J. C. Lashley, H. Harima, M. T. Suzuki

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

AuZn undergoes a shape-memory transition at 67 K. The de Haas-van Alphen effect persists to 100 K enabling the observation of a change in the quantum oscillation spectrum indicative of a catastrophic Fermi surface reconstruction at the transition. The coexistence of both Fermi surfaces at low temperatures suggests an intrinsic phase separation in the bulk of the material. In addition, Dingle analysis reveals a sharp change in the scattering mechanism at a threshold cyclotron radius, attributable to the underlying microstructure driving the shape-memory effect.

Original languageEnglish
Article number116401
JournalPhysical review letters
Volume94
Issue number11
DOIs
Publication statusPublished - 2005 Mar 25

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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