Plasmons in lithium ammonia

C. A. Burns, P. Abbamonte, E. D. Isaacs, P. M. Platzman

Research output: Contribution to journalArticlepeer-review


We report inelastic x-ray scattering measurements of the energy, linewidth, and dispersion of the plasmon in metallic lithium ammonia at an electron concentration of 4 × 1021 e-/cm3. These are the first measurements of plasmons in this system, which has the lowest electronic density for which a metal plasmon has been studied. We find a plasmon whose dispersion is only slightly reduced from the RPA value, and which is quite broad with an unusual momentum dependence.

Original languageEnglish (US)
Pages (from-to)2390-2393
Number of pages4
JournalPhysical review letters
Issue number12
StatePublished - Jan 1 1999

ASJC Scopus subject areas

  • General Physics and Astronomy


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