Bidirectional Current Drag Induced by Two-Electron Cotunneling in Coupled Double Quantum Dots

被引：25
作者：
Shinkai, Gou [1 ,2 ]
Hayashi, Toshiaki [1 ]
Ota, Takeshi [1 ]
Muraki, Koji [1 ]
Fujisawa, Toshimasa [1 ,2 ]
机构：
[1] NTT Corp, NTT Basic Res Labs, Kanagawa 2430198, Japan
[2] Tokyo Inst Technol, Res Ctr Low Temp Phys, Meguro Ku, Tokyo 1528551, Japan
来源：
APPLIED PHYSICS EXPRESS | 2009年 / 2卷 / 08期
基金：
日本学术振兴会;
关键词：
TRANSPORT; ARRAYS;
D O I：
10.1143/APEX.2.081101
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We demonstrate a bidirectional current drag device, in which an electron tunneling through a double-quantum-clot (DQD) drags another electron in the other DQD in the same or opposite direction. The direction can be switched by choosing the corresponding cotunneling process of the two electrons. A reasonable drag effect is experimentally confirmed in a GaAs device. This result encourages optimizing the device for current mirror functions. (C) 2009 The Japan Society of Applied Physics
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页数：3
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