Local control of dynamic nuclear polarization in quantum Hall devices

被引：56

作者：

Machida, T

Yamazaki, T

Komiyama, S

机构：

[1] Univ Tokyo, Dept Basic Sci, Meguro Ku, Tokyo 1538902, Japan

[2] Japan Sci & Technol Corp, Solut Oriented Res Sci & Technol, Tokyo, Japan

来源：

APPLIED PHYSICS LETTERS | 2002年 / 80卷 / 22期

关键词：

D O I：

10.1063/1.1483910

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We manipulate and detect local nuclear spin polarization in integer quantum Hall (IQH) systems using micrometal strips fabricated on top of Al0.3Ga0.7As/GaAs Hall bar devices. The radio-frequency (rf) magnetic fields generated by transmitting rf electrical currents through the micrometal strips causes nuclear magnetic resonance in a limited region along IQH edge channels, and resulting changes in the nuclear spin polarization are detected via Hall resistance of the devices. (C) 2002 American Institute of Physics.

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页码：4178 / 4180

页数：3

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