Effects of the Electron-Hole Interaction on the Giant Quantum Attenuation and Velocity Change of Sound Waves in Pyrolytic Graphite

Tomio Inoue, Takeshi Fukami, Hisao Kuriyaki, Shoichi Mase

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The sound attenuation and velocity change in pyrolytic graphite have been simultaneously measured as a function of the temperature, frequency and magnetic field intensity. It has been found that both the attenuation coefficient and the velocity change are greatly enhanced when some electron and hole Landau levels cross simultaneously the Fermi level at a certain field. The interrelation between the enhancement rate in the attenuation coefficient and that in the velocity change is reasonably explained in terms of the electron-hole correlation interaction proposed by Kuramoto. There remains, however, unexplained, as for the experimental results of rather strong temperature dependence of both quantities and weak frequency dependence of the velocity change.

Original languageEnglish
Pages (from-to)2862-2869
Number of pages8
JournalJournal of the Physical Society of Japan
Volume52
Issue number8
DOIs
Publication statusPublished - Jan 1 1983

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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