Direct measurements of femtosecond energy dissipation processes of hot electrons in a gold film

Akihide Hibara, Tomohiro Morishita, Isao Tsuyumoto, Akira Harata, Takehiko Kitamori, Tsuguo Sawada

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10 Citations (Scopus)

Abstract

Energy dissipation processes of hot electrons in a gold thin film were measured by a femtosecond time-resolved transient reflecting grating method. The processes were analyzed using the two-temperature model and the theory of the transient grating method. It was found that the electron-phonon coupling and thermal diffusion processes could be investigated independently. Temperature dependence of the electron-phonon coupling factor and the thermal conductivity was investigated quantitatively. The results suggested that the nonthermal states of hot electrons still contribute to the dissipation processes on time scales of several picoseconds.

Original languageEnglish
Pages (from-to)2983-2987
Number of pages5
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume38
Issue number5 A
DOIs
Publication statusPublished - 1999
Externally publishedYes

Keywords

  • Electron-phonon coupling
  • Hot electrons
  • Transient reflecting grating method
  • Transport phenomena

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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