Electron band structure in a two-dimensional periodic magnetic field

M. C. Chang, Q. Niu

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

In this paper we study the energy spectrum of a two-dimensional electron gas (2DEG) in a two-dimensional periodic magnetic field. Both a square magnetic lattice and a triangular one are considered. We consider the general case where the magnetic field in a cell can be of any shape. A general feature of the band structure is bandwidth oscillation as a function of the Landau index. A triangular magnetic lattice on a 2DEG can be realized by the vortex lattice of a superconductor film coated on top of a heterojunction. Our calculation indicates a way of relating the energy spectrum of the 2DEG to the vortex structure. We have also derived conditions under which the effects of a weak magnetic modulation, periodic or not, may be reproduced by an electric potential modulation, and vice versa.

Original languageEnglish
Pages (from-to)10843-10850
Number of pages8
JournalPhysical Review B
Volume50
Issue number15
DOIs
Publication statusPublished - 1994 Jan 1

Fingerprint

Two dimensional electron gas
Band structure
Magnetic fields
Electrons
energy spectra
magnetic fields
vortices
modulation
Vortex flow
electrons
Modulation
electron gas
heterojunctions
Superconducting materials
bandwidth
Heterojunctions
oscillations
electric potential
cells
Bandwidth

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Electron band structure in a two-dimensional periodic magnetic field. / Chang, M. C.; Niu, Q.

In: Physical Review B, Vol. 50, No. 15, 01.01.1994, p. 10843-10850.

Research output: Contribution to journalArticle

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