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

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

Research output: Contribution to journalArticle

34 Scopus citations


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
Issue number4
Publication statusPublished - Jan 1 1988


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this