Probing spin states in quantum dots by spin-resolved one-dimensional contacts

被引：0
|
作者：
Hitachi, K. [1 ]
Yamamoto, M. [2 ,3 ]
Tarucha, S. [2 ,4 ]
机构：
[1] Univ Tokyo, Dept Phys, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan
[2] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan
[3] JST, SORST, Kanagawa 2430198, Japan
[4] JST, ICOPE, Kanagawa 2430198, Japan
来源：
LOW TEMPERATURE PHYSICS, PTS A AND B | 2006年 / 850卷
关键词：
quantum dot; quantum wire; spin selectivity;
D O I：
暂无
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
We fabricate a quantum dot (QD) with tunnel-coupled quantum wires (QWs) to study the electronic states of the QD with the QWs as spin filters. The propagating modes of the QWs are adjusted with gate voltages to be either spin-resolved (n=1) or spin degenerate (n=2) under finite magnetic fields. Only for the n=1 QWs, we observe large and small Coulomb peaks alternating with magnetic field in the filling factor regime of v=2 to 4, which is assigned to singlet-triplet transitions induced by correlation effects.
引用
收藏
页码：1367 / +
页数：2
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