Phase measurement in the Kondo regime of a self assembled InAs quantum dot SQUID

被引：0
|
作者：
Kanai, Y. [1 ]
Nakayama, K. [1 ]
Deacon, R. S. [1 ,2 ]
Oiwa, A. [1 ,2 ]
Shibata, K. [3 ]
Hirakawa, K. [2 ,3 ]
Tarucha, S. [1 ]
机构：
[1] Univ Tokyo, Dept Appl Phys, 7-3-1 Hongo, Tokyo 113, Japan
[2] JST, CREST, Saitama, Japan
[3] Univ Tokyo, Inst Ind Sci, Tokyo, Japan
来源：
26TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT26), PTS 1-5 | 2012年 / 400卷
关键词：
D O I：
10.1088/1742-6596/400/4/042027
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We use a superconducting quantum interference device (SQUID) to detect the phase of an InAs quantum dot Josephson junction (QDJJ) in the Kondo regime. The QDJJ phase is derived from the measurement of superconducting interference. The pi-junction behavior is observed for a QD with an odd electron number and the phase transition from pi to 0 is observed by changing the parity of the electron number. In the Kondo regimes, we find that the QDJJ becomes a 0-junction even though the electron number is odd.
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页数：4
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