Strain-induced enhancement of electric quadrupole splitting in resistively detected nuclear magnetic resonance spectrum in quantum Hall systems

被引：12
作者：
Kawamura, M. [1 ,2 ,3 ]
Yamashita, T. [1 ]
Takahashi, H. [1 ]
Masubuchi, S. [1 ]
Hashimoto, Y. [4 ]
Katsumoto, S. [4 ,5 ]
Machida, T. [1 ,5 ]
机构：
[1] Univ Tokyo, Inst Ind Sci, Meguro Ku, Tokyo 1538505, Japan
[2] RIKEN Adv Sci Inst, Wako, Saitama 3510198, Japan
[3] Japan Sci & Technol Agcy, PRESTO, Saitama 3330012, Japan
[4] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan
[5] Univ Tokyo, Inst Nano Quantum Informat Elect, Meguro Ku, Tokyo 1538505, Japan
来源：
APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 03期
关键词：
aluminium compounds; gallium arsenide; III-V semiconductors; nuclear magnetic resonance; nuclear spin; quadrupole interactions; quantum Hall effect; SPIN; MANIPULATION; DEVICE;
D O I：
10.1063/1.3291618
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We show electrical coherent manipulation of quadrupole-split nuclear spin states in a GaAs/AlGaAs heterostructure on the basis of the breakdown of quantum Hall effect. The electric quadrupole splitting in nuclear spin energy levels is intentionally enhanced by applying an external stress to the heterostructure. Nuclear magnetic resonance spectra with clearly separated triple peaks are obtained, and Rabi oscillations are observed between the nuclear spin energy levels. The decay of the spin-echo signal is compared between the cases before and after the enhancement of quadrupole splitting.
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页数：3
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