Transport properties of a ladder with two random dimer chains 被引量：1

Transport properties of a ladder with two random dimer chains

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摘要 We investigate the transport properties of a ladder with two random dimer （RD） chains. It is found that there are two extended states in the ladder with identical RD chains and a critical state regarded as an extended state in the ladder with pairing RD chains. Such a critical state is caused by the chiral symmetry. The ladder with identical RD chains can be decoupled into two isolated RD chains and the ladder with pairing RD chains can not. The analytic expressions of the extended states are presented for the ladder with identical RD chains. We investigate the transport properties of a ladder with two random dimer （RD） chains. It is found that there are two extended states in the ladder with identical RD chains and a critical state regarded as an extended state in the ladder with pairing RD chains. Such a critical state is caused by the chiral symmetry. The ladder with identical RD chains can be decoupled into two isolated RD chains and the ladder with pairing RD chains can not. The analytic expressions of the extended states are presented for the ladder with identical RD chains.

作者胡冬生朱陈平张永梅

机构地区 College of Science

出处《Chinese Physics B》 SCIE EI CAS CSCD 2011年第1期548-552,共5页 中国物理B（英文版）

基金 Project supported by the National Natural Science Foundation of China(Grant Nos.70471084 and 10775071)

关键词 localization in disordered structures extended states chiral symmetry localization in disordered structures, extended states, chiral symmetry

分类号 O469 [理学—凝聚态物理]

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Transport properties of a ladder with two random dimer chains 被引量：1

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