Electrical Detection of Nuclear Magnetic Resonance Signal of Nuclear Spins of Order 104 in a Semiconductor Double Quantum Dot

被引：1
|
作者：
Takahashi, Ryo [1 ,2 ]
Kono, Kimitoshi [1 ,2 ]
Tarucha, Seigo [3 ]
Ono, Keiji [1 ]
机构：
[1] RIKEN, Low Temp Phys Lab, Wako, Saitama 3510198, Japan
[2] Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 1528551, Japan
[3] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan
来源：
APPLIED PHYSICS EXPRESS | 2012年 / 5卷 / 02期
关键词：
HALL-EFFECT REGIME; POLARIZATION; BLOCKADE; DEVICE;
D O I：
10.1143/APEX.5.025002
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report the electrical detection of a nuclear magnetic resonance signal of indium spins in a vertical GaAs/In0.04Ga0.96As double quantum dot. In this system, dynamic nuclear polarization appears to be accompanied by a relief of the Pauli spin-blockade state, and can be detected as a change in the current if a radio-frequency magnetic field is applied. We observed a change in the current under a dc magnetic field, and detected an NMR signal with similar to 2 x 10(4) indium spins as this change in the resonant frequency. A difference in polarization between two dots can be obtained with the depolarization of indium. (C) 2012 The Japan Society of Applied Physics
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页数：3
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