Spin Hall effect enhanced by Kondo resonance in semiconductor quantum dot

Tomohiro Yokoyama; Mikio Eto

doi:10.1063/1.3666543

Spin Hall effect enhanced by Kondo resonance in semiconductor quantum dot

Tomohiro Yokoyama, Mikio Eto

Department of Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	Physics of Semiconductors - 30th International Conference on the Physics of Semiconductors, ICPS-30
Pages	647-648
Number of pages	2
DOIs	https://doi.org/10.1063/1.3666543
Publication status	Published - 2011
Event	30th International Conference on the Physics of Semiconductors, ICPS-30 - Seoul, Korea, Republic of Duration: 2010 Jul 25 → 2010 Jul 30

Publication series

Name	AIP Conference Proceedings
Volume	1399
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Other

Other	30th International Conference on the Physics of Semiconductors, ICPS-30
Country/Territory	Korea, Republic of
City	Seoul
Period	10/7/25 → 10/7/30

Keywords

Kondo effect
quantum dot
resonant tunneling
spin Hall effect

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/1.3666543

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. 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

@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",

series = "AIP Conference Proceedings",

pages = "647--648",

booktitle = "Physics of Semiconductors - 30th International Conference on the Physics of Semiconductors, ICPS-30",

}

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

AN - SCOPUS:84855515168

SN - 9780735410022

T3 - AIP Conference Proceedings

SP - 647

EP - 648

BT - Physics of Semiconductors - 30th International Conference on the Physics of Semiconductors, ICPS-30

T2 - 30th International Conference on the Physics of Semiconductors, ICPS-30

Y2 - 25 July 2010 through 30 July 2010

ER -

Spin Hall effect enhanced by Kondo resonance in semiconductor quantum dot

Abstract

Publication series

Other

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this