Spin-half Kondo effect in a single self-assembled InAs quantum dot with and without an applied magnetic field

Y. Igarashi; M. Jung; M. Yamamoto; A. Oiwa; T. Machida; K. Hirakawa; S. Tarucha

doi:10.1103/PhysRevB.76.081303

Spin-half Kondo effect in a single self-assembled InAs quantum dot with and without an applied magnetic field

Y. Igarashi, M. Jung, M. Yamamoto, A. Oiwa, T. Machida, K. Hirakawa, S. Tarucha

Division of Nanotechnology

Research output: Contribution to journal › Article › peer-review

43 Scopus citations

Abstract

We observed the spin-half Kondo effect for a single uncapped large InAs self-assembled quantum dot at zero and at a high magnetic field. At zero field we observed the standard Kondo effect. The high-field Kondo effect appears only when the first and second spin-resolved Landau states become degenerate because of the large Zeeman effect, which we confirmed from the magnetic field dependence of the Kondo effect.

Original language	English
Article number	081303
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	76
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevB.76.081303
State	Published - 8 Aug 2007

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10.1103/PhysRevB.76.081303

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abstract = "We observed the spin-half Kondo effect for a single uncapped large InAs self-assembled quantum dot at zero and at a high magnetic field. At zero field we observed the standard Kondo effect. The high-field Kondo effect appears only when the first and second spin-resolved Landau states become degenerate because of the large Zeeman effect, which we confirmed from the magnetic field dependence of the Kondo effect.",

author = "Y. Igarashi and M. Jung and M. Yamamoto and A. Oiwa and T. Machida and K. Hirakawa and S. Tarucha",

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AU - Igarashi, Y.

AU - Jung, M.

AU - Yamamoto, M.

AU - Oiwa, A.

AU - Machida, T.

AU - Hirakawa, K.

AU - Tarucha, S.

PY - 2007/8/8

Y1 - 2007/8/8

N2 - We observed the spin-half Kondo effect for a single uncapped large InAs self-assembled quantum dot at zero and at a high magnetic field. At zero field we observed the standard Kondo effect. The high-field Kondo effect appears only when the first and second spin-resolved Landau states become degenerate because of the large Zeeman effect, which we confirmed from the magnetic field dependence of the Kondo effect.

AB - We observed the spin-half Kondo effect for a single uncapped large InAs self-assembled quantum dot at zero and at a high magnetic field. At zero field we observed the standard Kondo effect. The high-field Kondo effect appears only when the first and second spin-resolved Landau states become degenerate because of the large Zeeman effect, which we confirmed from the magnetic field dependence of the Kondo effect.

UR - https://www.scopus.com/pages/publications/34547838299

U2 - 10.1103/PhysRevB.76.081303

DO - 10.1103/PhysRevB.76.081303

M3 - Article

AN - SCOPUS:34547838299

SN - 1098-0121

VL - 76

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 8

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ER -

Spin-half Kondo effect in a single self-assembled InAs quantum dot with and without an applied magnetic field

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