Spin-polarized transport in a two-dimensional electron gas with interdigital-ferromagnetic contacts

Junsaku Nitta, A. Jensen, J. B. Hansen, Hideaki Takayanagi, C. M. Hu

Research output: Contribution to journalArticlepeer-review

152 Citations (Scopus)

Abstract

Ferromagnetic contacts on a high-mobility, two-dimensional electron gas (2DEG) in a narrow gap semiconductor with strong spin-orbit interaction are used to investigate spin-polarized electron transport. We demonstrate the use of magnetized contacts to preferentially inject and detect specific spin orientations. Spin dephasing and spin precession effects are studied by temperature and 2DEG channel length dependent measurements. Interdigital-ferromagnetic contacts suppress unwanted effects due to ferromagnetic microstrip inhomogeneities by averaging.

Original languageEnglish
Article number125333
Pages (from-to)1253331-1253334
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume63
Issue number12
Publication statusPublished - 2001 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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