Anomalies and electronic topological transitions in Cd

B. Godwal, S. Meenakshi, R. Rao

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

The total-energy calculations are carried out to obtain the axial ratio (Formula presented) variation with compression for cadmium. We find two anomalies as compared to a single anomaly at (Formula presented) observed in the experimental data. The first anomaly at (Formula presented) is due to electronic topological transition (ETT) and correlates well with the anomaly observed in the existing resistivity data. We find the (Formula presented)-orbital overlap, coupled with transfer of electrons from (Formula presented) to (Formula presented) states as the cause of second anomaly. This observation is in contrast to the existing understanding in zinc, where the (Formula presented) anomaly is attributed to the destruction of a giant Kohn anomaly by ETT. Nondestruction of giant Kohn anomaly in cadmium at high pressures is in disagreement with the current view in the literature that its Fermi surface is identical to that of zinc.

Original languageEnglish
Pages (from-to)14871-14874
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume56
Issue number23
DOIs
StatePublished - 1 Jan 1997
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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