Evidence of a Lifshitz transition in the high-pressure behavior of the intermetallic compound AuIn2

B. K. Godwal, S. Meenakshi, P. Modak, R. S. Rao, S. K. Sikka, V. Vijayakumar, E. Bussetto, A. Lausi

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

Accurate equation of state of AuIn2 was obtained by x-ray diffraction measurements with ELETTRA synchrotron source to pressures over 20 GPa. Below 5 GPa, the P-V data when transformed to universal equation of state (UEOS), shows a deviation from linearity, confirming an electronic transition, consistent with the anomaly observed earlier in fusion and electrical data. The present high-resolution data also reaffirm a structural phase transition beyond 9 GPa. Full potential electronic band-structure calculations reveal a Lifshitz transition at the observed anomaly in the UEOS. Its transition pressure was found to be sensitive to the exchange-correlation terms.

Original languageEnglish
Article number140101
Pages (from-to)1401011-1401014
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume65
Issue number14
DOIs
StatePublished - 1 Apr 2002
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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