Collective Excitation Modes in an Excitonic Phase Under Strong Magnetic Fields

Yoshio Kuramoto

研究成果: Article査読

4 被引用数 (Scopus)

抄録

Collective excitation modes in an excitonic phase under strong magnetic fields are investigated theoretically. Dispersion relations of such modes that are associated with oscillations of charge density and phase of the order parameter are derived. Special attention is paid to revealing how the one-dimensional spectrum and the degeneracy of the one-particle state are reflected in the dispersion relations. It is predicted that the phase oscillation mode yields a characteristic attenuation peak slightly below the phase transition temperature in the case where the ultrasound propagates perpendicular to the magnetic field. In the normal phase there are no resonant attenuations in this configuration.

本文言語English
ページ(範囲)1143-1153
ページ数11
ジャーナルjournal of the physical society of japan
42
4
DOI
出版ステータスPublished - 1977

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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