Magnetic-field effects on the transport properties of one-sided rough wires

Article

关键词: CORRUGATED WAVE-GUIDES;    CONDUCTANCE FLUCTUATIONS;    PROBABILITY-DISTRIBUTION;    2-SCALE LOCALIZATION;    BALLISTIC TRANSPORT;    DISORDERED MEDIA;    MOBILITY EDGE;    MATRIX THEORY;    SURFACE;    TRANSITION;   

DOI  :  10.1103/PhysRevB.66.233307

来源: SCIE

【 摘 要 】

We present a detailed numerical analysis of the effect of a magnetic field on the transport properties of a small-N one-sided surface disordered wire. When time-reversal symmetry is broken due to a magnetic field B, we find a strong increase with B not only of the localization length xi but also of the mean free path l caused by boundary states. Despite this, the universal relationship between l and xi does hold. We also analyze the conductance distribution at the metal-insulator crossover, finding very good agreement with random matrix theory with two fluctuating channels within the circular orthogonal (unitary) ensemble in the absence (presence) of B.

【 授权许可】

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