NMR MEASUREMENTS OF HOMONUCLEAR INDIRECT COUPLINGS IN GAAS

被引：12

作者：

POTTER, LD

WU, Y

机构：

[1] Department of Physics and Astronomy, University of North Carolina, Chapel Hill, NC

来源：

JOURNAL OF MAGNETIC RESONANCE SERIES A | 1995年 / 116卷 / 01期

关键词：

D O I：

10.1006/jmra.1995.1195

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

It was shown both theoretically and experimentally that isotropic indirect couplings in GaAs beyond the nearest neighbors can be measured accurately from the decays of Hahn echoes under fast magic-angle spinning. In addition, homonuclear indirect couplings give rise to a shift of the spin-echo timing which can be predicted precisely based on the measured isotropic indirect couplings. The decrease of isotropic indirect coupling with increasing distance between two nuclear spins is slower than the prediction of the theory on indirect couplings in semiconductors. (C) 1995 Academic Press, Inc.

引用

页码：107 / 112

页数：6

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