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 publicationAIP Conference Proceedings
Pages647-648
Number of pages2
Volume1399
DOIs
Publication statusPublished - 2011
Event30th International Conference on the Physics of Semiconductors, ICPS-30 - Seoul, Korea, Republic of
Duration: 2010 Jul 252010 Jul 30

Other

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

Fingerprint

Hall effect
quantum dots
Kondo effect
spacing
resonant tunneling
spin-orbit interactions
energy levels
oscillations
temperature

Keywords

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

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Yokoyama, T., & Eto, M. (2011). Spin Hall effect enhanced by Kondo resonance in semiconductor quantum dot. In AIP Conference Proceedings (Vol. 1399, pp. 647-648) https://doi.org/10.1063/1.3666543

Spin Hall effect enhanced by Kondo resonance in semiconductor quantum dot. / Yokoyama, Tomohiro; Eto, Mikio.

AIP Conference Proceedings. Vol. 1399 2011. p. 647-648.

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

Yokoyama, T & Eto, M 2011, Spin Hall effect enhanced by Kondo resonance in semiconductor quantum dot. in AIP Conference Proceedings. vol. 1399, pp. 647-648, 30th International Conference on the Physics of Semiconductors, ICPS-30, Seoul, Korea, Republic of, 10/7/25. https://doi.org/10.1063/1.3666543
Yokoyama, Tomohiro ; Eto, Mikio. / Spin Hall effect enhanced by Kondo resonance in semiconductor quantum dot. AIP Conference Proceedings. Vol. 1399 2011. pp. 647-648
@inproceedings{b4be129744bc49f392d11dae8a4c13eb,
title = "Spin Hall effect enhanced by Kondo resonance in semiconductor quantum dot",
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.",
keywords = "Kondo effect, quantum dot, resonant tunneling, spin Hall effect",
author = "Tomohiro Yokoyama and Mikio Eto",
year = "2011",
doi = "10.1063/1.3666543",
language = "English",
isbn = "9780735410022",
volume = "1399",
pages = "647--648",
booktitle = "AIP Conference Proceedings",

}

TY - GEN

T1 - Spin Hall effect enhanced by Kondo resonance in semiconductor quantum dot

AU - Yokoyama, Tomohiro

AU - Eto, Mikio

PY - 2011

Y1 - 2011

N2 - 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.

AB - 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.

KW - Kondo effect

KW - quantum dot

KW - resonant tunneling

KW - spin Hall effect

UR - http://www.scopus.com/inward/record.url?scp=84855515168&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84855515168&partnerID=8YFLogxK

U2 - 10.1063/1.3666543

DO - 10.1063/1.3666543

M3 - Conference contribution

SN - 9780735410022

VL - 1399

SP - 647

EP - 648

BT - AIP Conference Proceedings

ER -