Dynamical response properties of a two-dimensional electron gas in a weak periodic magnetic modulation

S. M. Stewart, W. Xu, D. J. Fisher, C. Zhang

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Calculating the dynamical dielectric response function for a two-dimensional electron gas (2D EG) under a perpendicular magnetic field and subjected to an additional weak unidirectional periodic magnetic field within the random-phase approximation (RPA), we find that not only is the response function broadened in the presence of the magnetic modulation, but it is also found to contain a series of subsingularities at the band edges which are attributed to the magnetic modulation induced broadening of the energy spectrum.

Original languageEnglish
Pages (from-to)285-289
Number of pages5
JournalSuperlattices and Microstructures
Volume24
Issue number4
DOIs
Publication statusPublished - Oct 1998
Externally publishedYes

Keywords

  • Random-phase approximation
  • Response properties
  • Spatial periodic modulation

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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