Giant magnetoresistance in a two-dimensional electron gas modulated by periodically repeated magnetic barriers

G. Papp, S. Borza

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The giant magnetoresistance effect is investigated in a two-dimensional electron gas modulated by periodically repeated magnetic barriers, which can be realized by depositing parallel ferromagnets on the top and the bottom of a heterostructure. It is found that the magnetoresistance ratio (MRR) of the present system shows a strong dependence on the number of ferromagnetic unit cells. The modified MRR (MMRR) shows oscillations, where the number of peaks is determined by the number of units, and our study indicates that for experimentally accessible parameters for a GaAs heterostructure the value of the MMRR can be as high as 55% for a realistic electron density.

Original languageEnglish
Pages (from-to)2023-2027
Number of pages5
JournalSolid State Communications
Volume150
Issue number41-42
DOIs
Publication statusPublished - Nov 2010

Fingerprint

Giant magnetoresistance
Two dimensional electron gas
electron gas
Heterojunctions
oscillations
Magnetoresistance
cells
Carrier concentration
gallium arsenide

Keywords

  • A. Ferromagnetic strips
  • A. Two-dimensional electron gas
  • D. Giant magnetoresistance

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Chemistry(all)
  • Materials Chemistry

Cite this

Giant magnetoresistance in a two-dimensional electron gas modulated by periodically repeated magnetic barriers. / Papp, G.; Borza, S.

In: Solid State Communications, Vol. 150, No. 41-42, 11.2010, p. 2023-2027.

Research output: Contribution to journalArticle

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