RANDOM-MATRIX THEORY OF QUANTUM-SIZE EFFECTS ON NUCLEAR-MAGNETIC-RESONANCE IN METAL PARTICLES

被引:29
作者
BEENAKKER, CWJ
机构
[1] Instituut-Lorentz, University of Leiden, 2300 RA Leiden
来源
PHYSICAL REVIEW B | 1994年 / 50卷 / 20期
关键词
D O I
10.1103/PhysRevB.50.15170
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The distribution function of the local density of states is computed exactly for the Wigner-Dyson ensemble of random Hamiltonians. In the absence of time-reversal symmetry, precise agreement is obtained with the supersymmetry theory by Efetov and Prigodin of the NMR line shape in disordered metal particles. Upon breaking time-reversal symmetry, the variance of the Knight shift in the smallest particles is reduced by a universal factor of 2/3. © 1994 The American Physical Society.
引用
收藏
页码:15170 / 15173
页数:4
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