High-resolution temperature-dependent valence-band photoemission spectroscopy of gold:mNature of electron-phonon coupling

T. Yokoya, A. Chainani, T. Takahashi

Research output: Contribution to journalArticle

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Abstract

Using high-resolution temperature-dependent (20-400 K) valence-band photoemission spectroscopy, we study the nature of electron-phonon coupling in polycrystalline gold. The valence band shows systematic broadening for increasing temperatures which is well-reproduced by a Gaussian broadening of the 20 K spectrum. It depends linearly on temperature and is found to be excessive (∼9 (Formula presented) T). The results suggest the existence of anharmonic lattice vibrations and a quadratic electron-phonon coupling, similar to the case of aluminum 2p core levels.

Original languageEnglish
Pages (from-to)5574-5577
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume55
Issue number9
DOIs
Publication statusPublished - 1997 Jan 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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