Long-wavelength excitations in the Wigner crystal in strong magnetic fields

Y. Kuramoto

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Excitation spectra in the Wigner crystal in strong magnetic fields have been investigated and special attention has been paid to the effects of finite shear stress, which is absent in magnetised plasmas. It is shown that the velocity of the shear mode is strongly dependent on the strength of the magnetic field, and can be made comparable to the velocity of ultrasound in a semiconductor. It is predicted that when these two velocities become equal to each other in a highly compensated semiconductor such as n-type InSb, resonant absorption of the ultrasound occurs through the piezoelectric interaction. This absorption should provide clear experimental evidence for the Wigner crystallisation.

Original languageEnglish
Article number014
Pages (from-to)2033-2042
Number of pages10
JournalJournal of Physics C: Solid State Physics
Volume12
Issue number11
DOIs
Publication statusPublished - 1979 Dec 1

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Engineering(all)
  • Physics and Astronomy(all)

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