Spin filter due to spin Hall effect with axially asymmetric potential

Tomohiro Yokoyama, Mikio Eto

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We examine a three-terminal spin filter including an artificial potential created by antidot, scanning tunnel microscope (STM) tip, etc., fabricated on semiconductor heterostructures with strong spin-orbit interaction. When the potential is attractive and its strength is properly tuned, the resonant scattering takes place, which enhances the extrinsic spin Hall effect. As a result, the efficiency of the spin filter can be more than 50% when the potential is axially symmetric. The efficiency becomes smaller when the symmetry is broken, but we still expect an efficient spin filter unless the degree of asymmetry is too large.

Original languageEnglish
Pages (from-to)956-959
Number of pages4
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume42
Issue number4
DOIs
Publication statusPublished - 2010 Feb

Fingerprint

Spin Hall effect
Hall effect
filters
Beam plasma interactions
Heterojunctions
Tunnels
Orbits
Microscopes
Scattering
Semiconductor materials
Scanning
spin-orbit interactions
tunnels
broken symmetry
microscopes
asymmetry
scanning
scattering

Keywords

  • Antidot
  • Resonant scattering
  • Spin filter
  • Spin Hall effect
  • Spin-orbit interaction

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials

Cite this

Spin filter due to spin Hall effect with axially asymmetric potential. / Yokoyama, Tomohiro; Eto, Mikio.

In: Physica E: Low-Dimensional Systems and Nanostructures, Vol. 42, No. 4, 02.2010, p. 956-959.

Research output: Contribution to journalArticle

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