Many-body effects in a nonequilibrium electron-lattice system: Coupling of quasiparticle excitations and low phonons

J. K. Jain, R. Jalabert, S. Das Sarma

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Abstract

The coupling of quasiparticle excitations in an electron gas to the LO phonons gives rise to novel phonon modes with energies below qvF. We propose that these low-energy "phonon" modes, in addition to the usual plasmon-phonon coupled modes, are responsible for a large (by orders of magnitude) enhancement of the hot-electron energy-loss rate to the lattice at low electron temperatures, as observed in several recent experiments. Experimental conditions are outlined for an unambiguous observation of this predicted many-body effect.

Original languageEnglish (US)
Pages (from-to)353-356
Number of pages4
JournalPhysical Review Letters
Volume60
Issue number4
DOIs
Publication statusPublished - Jan 1 1988

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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