LEVEL CORRELATIONS DRIVEN BY WEAK-LOCALIZATION IN 2D SYSTEMS

被引：44

作者：

KRAVTSOV, VE

LERNER, IV

机构：

[1] RUSSIAN ACAD SCI, INST SPECT, TROITSK 142092, RUSSIA

[2] UNIV BIRMINGHAM, SCH PHYS & SPACE RES, BIRMINGHAM B15 2TT, W MIDLANDS, ENGLAND

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.74.2563

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We consider the two-level correlation function in two-dimensional disordered systems. In the nonergodic diffusive regime, at energy ε>Ec (Ec is the Thouless energy), it is shown to be completely determined by the weak localization effects, thus being extremely sensitive to time reversal and spin symmetry breaking: It decreases drastically in the presence of magnetic field or magnetic impurities and changes its sign in the presence of a spin-orbit interaction. In contrast to this, the variance of the levels number fluctuations is shown to be almost unaffected by the weak localization effects. © 1995 The American Physical Society.

引用

页码：2563 / 2566

页数：4