Theory of Plasmon Damping in Metals. : II. Effects of Electron-Ion Interaction
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概要
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Effects of electron-ion interaction on the plasmon damping in metals are investigated by using a general formulation developed in a previous paper. Damping of a plasmon with small wavenumber q is mainly determined by the processes in which the plasmon dacays into (i) one electron-hole pair by interband transition and (ii) one electron-hole pair with simultaneous absorption or emission of a phonon. These processes give negative q^2-coefficient of damping in the small wavenumber region. On the other hand, the process in which the plasmon decays into another plasmon with simultaneous absorption or emission of a phonon gives the damping nearly proportional to q. As a whole, with including the contribution of the electron-electron interaction discussed in I, plasmon half-width in Al slightly decreases as q increases in the small q region, while the damping in Na slightly increases with q.
- 社団法人日本物理学会の論文
- 1971-09-05
著者
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Hasegawa Masayuki
Department Of Materials Science And Technology Faculty Of Engineering Iwate University
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Hasegawa Masayuki
Department Of Physics Faculty Of Science Tohoku University
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