Fluctuating spin g-tensor in small metal grains

被引:48
作者
Brouwer, PW [1 ]
Waintal, X
Halperin, BI
机构
[1] Cornell Univ, Atom & Solid State Phys Lab, Ithaca, NY 14853 USA
[2] Harvard Univ, Lyman Lab Phys, Cambridge, MA 02138 USA
关键词
D O I
10.1103/PhysRevLett.85.369
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
In the presence of spin-orbit scattering, the splitting of an energy level epsilon(mu) in a generic small metal grain due to the Zeeman coupling to a magnetic field (B) over right arrow depends on the direction of (B) over right arrow, as a result of mesoscopic fluctuations. The anisotropy is described by the eigenvalues g(j)(2) (j = 1,2,3) of a tensor G, corresponding to the (squares of) g-factors along three principal axes. We consider the statistical distribution of G and find that the anisotropy is enhanced by eigenvalue repulsion between the g(j).
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收藏
页码:369 / 372
页数:4
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