Investigation of spin state in a quantum dot by using strongly asymmetric tunnel barriers

T. Hayashi, T. Fujisawa, Y. Hirayama

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

We investigate the spin state of a GaAs lateral quantum dot (QD) by using strongly asymmetric tunnel barriers. The saturated current depends on the current polarity, which switches the direction of the dominant tunneling transition that increases or decreases the total spin. With this technique, the spin polarization and the Coulomb interaction are investigated. We find that high spin states appearing in some magnetic field regions can be understood by considering simple Coulomb interactions.

Original languageEnglish
Pages (from-to)262-265
Number of pages4
JournalPhysica Status Solidi (B) Basic Research
Volume238
Issue number2
DOIs
Publication statusPublished - 2003 Jul 1
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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