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Interchain coupling induced localization/delocalization in coupled one-dimensional ordered and disordered chains

文献类型:期刊论文

作者Zhang, Wei1; Yang, Rong2; Zhao, Yi1; Duan, Suqing1; Zhang, Ping1; Ulloa, Sergio E.3,4
刊名Physical review b
出版日期2010-06-18
卷号81期号:21页码:7
ISSN号1098-0121
DOI10.1103/physrevb.81.214202
通讯作者Zhang, wei(zhang_wei@iapcm.ac.cn)
英文摘要A different type of system with coupled ordered-disordered chains has given rise to considerable interest recently, as it has a variety of applications in nanostructures and biological systems such as dna molecules. we investigate the localization/delocalization of coupled one-dimensional systems composed of one disordered chain (chain i) and another ordered chain (chain ii), focusing on the interplay among the disorder, correlation, and interchain coupling. we find that for systems where chain i exhibits uncorrelated disorder, charge transport in chain i (ii) is enhanced (suppressed), as the disorder in chain i leads to the localization of all states in both chains. however, for chain i with hopping amplitude t(1) and long-range correlated disorder (with power-law spectral density and disorder strength w), we find there is a localization/delocalization transition for the case w <= 4t(1), induced by interchain coupling. for w > 4t(1), we find there is a quantum-phase transition at finite interchain coupling v(c): the interchain coupling induces appearance of two channels of extended states for v > v(c) while there is only one channel of extended states for v < v(c).
WOS关键词RANGE CORRELATED DISORDER ; ANDERSON LOCALIZATION ; SCALING THEORY ; DNA ; TRANSPORT ; SYSTEMS ; DELOCALIZATION ; SEQUENCES ; ABSENCE ; MODEL
WOS研究方向Physics
WOS类目Physics, Condensed Matter
语种英语
WOS记录号WOS:000278936700001
出版者AMER PHYSICAL SOC
URI标识http://www.irgrid.ac.cn/handle/1471x/2176009
专题高能物理研究所
通讯作者Zhang, Wei
作者单位1.Inst Appl Phys & Computat Math, Beijing 100088, Peoples R China
2.Natl Ctr Nanosci & Technol, Key Lab Biol Effects Nanomat & Nanosafety, Beijing 100190, Peoples R China
3.Ohio Univ, Dept Phys & Astron, Athens, OH 45701 USA
4.Ohio Univ, Nanoscale & Quantum Phenomena Inst, Athens, OH 45701 USA
推荐引用方式
GB/T 7714
Zhang, Wei,Yang, Rong,Zhao, Yi,et al. Interchain coupling induced localization/delocalization in coupled one-dimensional ordered and disordered chains[J]. Physical review b,2010,81(21):7.
APA Zhang, Wei,Yang, Rong,Zhao, Yi,Duan, Suqing,Zhang, Ping,&Ulloa, Sergio E..(2010).Interchain coupling induced localization/delocalization in coupled one-dimensional ordered and disordered chains.Physical review b,81(21),7.
MLA Zhang, Wei,et al."Interchain coupling induced localization/delocalization in coupled one-dimensional ordered and disordered chains".Physical review b 81.21(2010):7.

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来源:高能物理研究所

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