Role of the symmetry parameter beta in the strongly localized regime

Article

关键词: DISORDERED CONDUCTORS;    QUANTUM DIFFUSION;    SCALING THEORY;    STATISTICS;    DIMENSION;    SYSTEMS;    ABSENCE;   

DOI  :  10.1103/PhysRevB.82.113412

来源: SCIE

【 摘 要 】

The generalization of the Dorokhov-Mello-Pereyra-Kumar equation for the description of transport in strongly disordered systems replaces the symmetry parameter beta by a new parameter gamma, which decreases to zero when the disorder strength increases. We show numerically that although the value of gamma strongly influences the statistical properties of transport parameters Delta and of the energy-level statistics, the form of their distributions always depends on the symmetry parameter beta even in the limit of strong disorder. In particular, the probability distribution is p(Delta) similar to Delta(beta) when Delta --> 0 and p(Delta) similar to exp(-c Delta(2)) in the limit Delta --> infinity.

【 授权许可】

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