Detection of spin polarization in a quantum wire

Tomohiro Otsuka, Eisuke Abe, Yasuhiro Iye, Shingo Katsumoto

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We demonstrate detection of spin polarization in a quantum wire utilizing a side coupled quantum dot. By applying in-plane magnetic fields, spin split conducting channels are formed and produce spin polarization in the wire. The magnetic fields also create Zeeman split spin levels in the dot and these states are used as a spin polarization detector. Such kind of spin polarization detection with a side coupled quantum dot will operate even in the zero magnetic field by using two-electron singlet and triplet levels.

Original languageEnglish
Pages (from-to)809-812
Number of pages4
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume42
Issue number4
DOIs
Publication statusPublished - 2010 Feb 1
Externally publishedYes

Keywords

  • Quantum dot
  • Quantum wire
  • Spin polarization

ASJC Scopus subject areas

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

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