Spin Hall effect enhanced by Kondo resonance in semiconductor quantum dot

Tomohiro Yokoyama, Mikio Eto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We theoretically study the spin Hall effect (SHE) in multi-terminal quantum-dot system with spin-orbit interaction. First, we analytically formulate the SHE around current peaks of the Coulomb oscillation. The SHE is remarkably enhanced by the resonant tunneling when the energy level spacing is smaller than the level broadening in the quantum dot. Next, we examine the many-body resonance by the Kondo effect in the Coulomb blockade regime. A large SHE is observed in the presence of SU(4) Kondo effect when the level spacing is smaller than the Kondo temperature.

Original languageEnglish
Title of host publicationPhysics of Semiconductors - 30th International Conference on the Physics of Semiconductors, ICPS-30
Pages647-648
Number of pages2
DOIs
Publication statusPublished - 2011 Dec 1
Event30th International Conference on the Physics of Semiconductors, ICPS-30 - Seoul, Korea, Republic of
Duration: 2010 Jul 252010 Jul 30

Publication series

NameAIP Conference Proceedings
Volume1399
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other30th International Conference on the Physics of Semiconductors, ICPS-30
CountryKorea, Republic of
CitySeoul
Period10/7/2510/7/30

Keywords

  • Kondo effect
  • quantum dot
  • resonant tunneling
  • spin Hall effect

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Yokoyama, T., & Eto, M. (2011). Spin Hall effect enhanced by Kondo resonance in semiconductor quantum dot. In Physics of Semiconductors - 30th International Conference on the Physics of Semiconductors, ICPS-30 (pp. 647-648). (AIP Conference Proceedings; Vol. 1399). https://doi.org/10.1063/1.3666543