Plasmons in lithium ammonia

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

doi:10.1103/PhysRevLett.83.2390

Plasmons in lithium ammonia

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

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Abstract

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 language	English (US)
Pages (from-to)	2390-2393
Number of pages	4
Journal	Physical review letters
Volume	83
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevLett.83.2390
State	Published - Jan 1 1999

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General Physics and Astronomy

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Plasmons in lithium ammonia

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