Knight shift detection using gate-induced decoupling of the hyperfine interaction in quantum Hall edge channels

被引：15

作者：

Masubuchi, S. ^{[1
]}

Hamaya, K. ^{[1
]}

Machida, T. ^{[1
]}

机构：

[1] Univ Tokyo, Inst Ind Sci, Meguro Ku, Tokyo 1538505, Japan

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 06期

基金：

日本学术振兴会;

关键词：

NMR;

D O I：

10.1063/1.2335595

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A method for the observation of the Knight shift in nanometer-scale region in semiconductors is developed using resistively detected nuclear magnetic resonance (RDNMR) technique in quantum Hall edge channels. Using a gate-induced decoupling of the hyperfine interaction between electron and nuclear spins, the authors obtain the RDNMR spectra with or without the electron-nuclear spin coupling. By a comparison of these two spectra, the values of the Knight shift can be given for the nuclear spins polarized dynamically in the region between the relevant edge channels in a single two-dimensional electron system, indicating that this method has a very high sensitivity compared to a conventional NMR technique. (c) 2006 American Institute of Physics.

引用

页数：3

共 11 条

[1] OPTICALLY PUMPED NMR EVIDENCE FOR FINITE-SIZE SKYRMIONS IN GAAS QUANTUM-WELLS NEAR LANDAU-LEVEL FILLING NU=1 [J].

BARRETT, SE ;

DABBAGH, G ;

PFEIFFER, LN ;

WEST, KW ;

TYCKO, R .

PHYSICAL REVIEW LETTERS, 1995, 74 (25) :5112-5115

[2] A silicon-based nuclear spin quantum computer [J].

Kane, BE .

NATURE, 1998, 393 (6681) :133-137

[3] New type of electron nuclear-spin interaction from resistively detected NMR in the fractional quantum Hall effect regime [J].

Kronmüller, S ;

Dietsche, W ;

von Klitzing, K ;

Denninger, G ;

Wegscheider, W ;

Bichler, M .

PHYSICAL REVIEW LETTERS, 1999, 82 (20) :4070-4073

[4] Coherent control of nuclear-spin system in a quantum-Hall device [J].

Machida, T ;

Yamazaki, T ;

Ikushima, K ;

Komiyama, S .

APPLIED PHYSICS LETTERS, 2003, 82 (03) :409-411

[5] Local control of dynamic nuclear polarization in quantum Hall devices [J].

Machida, T ;

Yamazaki, T ;

Komiyama, S .

APPLIED PHYSICS LETTERS, 2002, 80 (22) :4178-4180

[6] Charge excitations in easy-axis and easy-plane quantum Hall ferromagnets [J].

Muraki, K ;

Saku, T ;

Hirayama, Y .

PHYSICAL REVIEW LETTERS, 2001, 87 (19) :1-196801

[7] High-field optically detected nuclear magnetic resonance in GaAs [J].

Poggio, M ;

Awschalom, DD .

APPLIED PHYSICS LETTERS, 2005, 86 (18) :1-3

[8] Gate control of dynamic nuclear polarization in GaAs quantum wells [J].

Sanada, H ;

Matsuzaka, S ;

Morita, K ;

Hu, CY ;

Ohno, Y ;

Ohno, H .

PHYSICAL REVIEW LETTERS, 2005, 94 (09)

[9]

Slichter C.P., 1990, Springer Series in Solid-State Sciences, VThird

[10] NMR study of the electron spin polarization in the fractional quantum Hall effect of a single quantum well: Spectroscopic evidence for domain formation [J].

Stern, O ;

Freytag, N ;

Fay, A ;

Dietsche, W ;

Smet, JH ;

von Klitzing, K ;

Schuh, D ;

Wegscheider, W .

PHYSICAL REVIEW B, 2004, 70 (07) :075318-1

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