Temperature effect on acoustic plasmons

V. M. Silkin, V. U. Nazarov, A. Balassis, I. P. Chernov, E. V. Chulkov

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The presence of several kinds of carriers at the Fermi surface results in interesting complex dielectric properties of the bulk Pd in the low-energy excitation range. A most spectacular manifestation of this is the presence of a collective electronic excitation characterized by a soundlike dispersion, termed acoustic plasmon (AP). Due to the characteristic dispersion reaching zero energy in the long-wavelength limit, the question of the thermal stability of the excitation spectrum arises. In this work we explore this problem investigating the thermal effect on the electronic excitation spectrum in this material, tracing how the AP properties vary with the temperature increase. The main effect consists in the gradual destruction of AP in the energy range corresponding to the temperature.

Original languageEnglish
Article number165122
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume94
Issue number16
DOIs
Publication statusPublished - 11 Oct 2016

Fingerprint

Plasmons
plasmons
Thermal effects
temperature effects
Acoustic dispersion
Acoustics
Fermi surface
acoustics
Excitation energy
Dielectric properties
excitation
Thermodynamic stability
Wavelength
Temperature
tracing
electronics
Fermi surfaces
destruction
energy
dielectric properties

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Temperature effect on acoustic plasmons. / Silkin, V. M.; Nazarov, V. U.; Balassis, A.; Chernov, I. P.; Chulkov, E. V.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 94, No. 16, 165122, 11.10.2016.

Research output: Contribution to journalArticle

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