Abstract
Intraband pair excitation and plasmon spectra of nonequilibrium plasmas are analyzed using the dynamic dielectric function in the random-phase approximation. Nonequilibrium conditions are identified for which the Landau damping of acoustic plasmons vanishes. This acoustic-plasmon undamping is discussed for two-component plasmas and for one-component plasmas with a double-peaked distribution in momentum space.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 10210-10216 |
| Number of pages | 7 |
| Journal | Physical Review B-Condensed Matter |
| Volume | 47 |
| Issue number | 16 |
| DOIs | |
| State | Published - 1993 |
ASJC Scopus subject areas
- Condensed Matter Physics
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