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Title: Interaction of surface and bulk acoustic waves with a two-dimensional semimetal

The interaction of a surface elastic Rayleigh wave with an electron-hole plasma in a two-dimensional semimetal has been theoretically studied as determined by the deformation potential and piezoelectric mechanisms. Dispersion equations describing the coupled plasmon-acoustic modes for both types of interaction are derived, and damping of the Rayleigh wave is calculated. The damping of the acoustic and optical plasmon modes, which is related to the sound emission by plasma oscillations into the substrate volume, is calculated and it is shown that this sound emission is predominantly determined by the acoustic plasmon mode in the case of a deformation potential mechanism and by the optical mode in the case of a piezoelectric mechanism.
Authors:
;  [1]
  1. Russian Academy of Sciences, Rzhanov Institute of Semiconductor Physics, Siberian Branch (Russian Federation)
Publication Date:
OSTI Identifier:
22472386
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 120; Journal Issue: 2; Other Information: Copyright (c) 2015 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; DAMPING; DEFORMATION; OPTICAL MODES; PIEZOELECTRICITY; PLASMA WAVES; PLASMONS; POTENTIALS; RAYLEIGH WAVES; SEMIMETALS; SOLID-STATE PLASMA; SOUND WAVES; SUBSTRATES; SURFACES; TWO-DIMENSIONAL CALCULATIONS; TWO-DIMENSIONAL SYSTEMS