PERIODIC-ORBIT THEORY OF QUANTUM TRANSPORT IN ANTIDOT LATTICES

被引:54
作者
HACKENBROICH, G
VONOPPEN, F
机构
[1] Max-Planck-Institut fiir Kemphysik, Heidelberg
来源
EUROPHYSICS LETTERS | 1995年 / 29卷 / 02期
关键词
D O I
10.1209/0295-5075/29/2/008
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
In a recent experiment Weiss et al. (Phys. Rev. Lett., 70 (1993) 4118) observed novel quantum oscillations in the magnetoconductance of large antidot lattices whose classical dynamics is chaotic. Using a semiclassical approach to the Kubo formula, we derive analytical expressions for quantum corrections to the conductivity in terms of the classical periodic orbits of the system which explain the observations by Weiss et al. The contribution from each periodic orbit oscillates as a function of magnetic field and Fermi energy with the phase given by the classical action. The amplitude is determined by the stability of the orbit and disorder-dependent velocity correlations. We also show that these quantum oscillations are related to Shubnikovde Haas oscillations.
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收藏
页码:151 / 156
页数:6
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