Electron localization in a two-channel tight-binding model with correlated disorder

Article

关键词: DIMENSIONAL ANDERSON MODEL;    MOBILITY EDGE;    DELOCALIZATION;    TRANSPORT;    SYSTEMS;    ABSENCE;   

DOI  :  10.1103/PhysRevB.76.134202

来源: SCIE

【 摘 要 】

We calculate the localization length in a two-channel tight-binding model for correlated disordered site potential. Both intra- and interchannel correlations are taken into account. The localization length is obtained in quadratic approximation by expanding the two-channel conductance over weak disorder. The result is applied to a simple two-stranded model of DNA molecule and it is shown that a strong pair coupling between the basic nucleotides in the strands is not sufficient to delocalize electronic states.

【 授权许可】

Free