Excitation Spectrum of a Double Quantum Well System in a Strong Magnetic Field

Osamu Narikiyo, Daijiro Yoshioka

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

The collective charge-excitation spectrum of a double quantum well system in a strong magnetic field is obtained within the random phase approximation. Correction to the spectrum coming from the finiteness of the magnetic field is calculated up to the first order in inverse of the magnetic field. Dependencies on the magnetic field of (i) the velocity of long wave length excitation and (ii) the phase boundary of the quantum Hall state signaled by the softening of the roton minimum of the spectrum are discussed.

Original languageEnglish
Pages (from-to)1612-1623
Number of pages12
Journaljournal of the physical society of japan
Volume62
Issue number5
DOIs
Publication statusPublished - Jan 1 1993
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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