Anomalous temperature and disorder dependence of the electron-phonon scattering time in impure metals

Juhn-Jong Lin*, Y. L. Zhong, L. Y. Kao, A. K. Meikap

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

We have measured the electron-phonon scattering time, τep, in disordered metals at liquid-helium temperatures, using weak-localization method. The temperature and disorder dependence of τep is determined for AgPd and AuPd thick films, and V100-xAlx alloys. In all three cases, we find an anomalous temperature and disorder dependence of τep-1∝T2ℓ, where ℓ is the electron elastic mean free path. This temperature and disorder behavior cannot be explained in terms of current theoretical concepts for the electron-phonon interaction in impure conductors. Current theory predicts a form of either τep-1 ∝ T4ℓ or τep-1 ∝ T2-1 in the dirty limit, depending on the nature of the defects.

Original languageEnglish
Pages (from-to)302-303
Number of pages2
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume18
Issue number1-3
DOIs
StatePublished - 1 May 2003
Event23rd International Conference on Low Temperature Physics - Hiroshima, Japan
Duration: 20 Aug 200227 Aug 2002

Keywords

  • Electron-phonon interaction
  • Impure conductors
  • Weak localization

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