Spin-half Kondo effect in a single self-assembled InAs quantum dot with and without an applied magnetic field
被引:37
作者:
Igarashi, Y.
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机构:
Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, JapanUniv Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan
Igarashi, Y.
[1
]
Jung, M.
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机构:Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan
Jung, M.
Yamamoto, M.
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机构:Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan
Yamamoto, M.
Oiwa, A.
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机构:Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan
Oiwa, A.
Machida, T.
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机构:Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan
Machida, T.
Hirakawa, K.
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机构:Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan
Hirakawa, K.
Tarucha, S.
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机构:Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan
Tarucha, S.
机构:
[1] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan
[2] Univ Tokyo, Inst Ind Sci, Meguro Ku, Tokyo 1538505, Japan
[3] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan
[4] JST, ICORP, Atsugi, Kanagawa 2430198, Japan
来源:
PHYSICAL REVIEW B
|
2007年
/
76卷
/
08期
关键词:
D O I:
10.1103/PhysRevB.76.081303
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
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.