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 language | English (US) |
|---|---|
| Pages (from-to) | 353-356 |
| Number of pages | 4 |
| Journal | Physical review letters |
| Volume | 60 |
| Issue number | 4 |
| DOIs | |
| State | Published - 1988 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy