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Electronic transmission in a double‐chain system with random interchain couplings
Author(s) -
Chen Yan,
Xiong ShiJie
Publication year - 1996
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221960214
Subject(s) - coupling (piping) , coupling strength , transmission (telecommunications) , chain (unit) , condensed matter physics , transmission coefficient , recursion (computer science) , materials science , position (finance) , polymer , physics , chemical physics , quantum mechanics , computer science , telecommunications , composite material , finance , algorithm , economics
We study, via an exact self‐consistent recursion method, the effect of random interchain hoppings on the electronic transmission through two chains with common collecting electrodes at their ends. Each of the chains may be pure or doped with random impurity dimers. The interchain couplings are random in both strength and position. The results show that although the increase of the strength of the random interchain couplings causes the decrease of the transmission, the increase of the coupling density of the system may first decrease and then increase the transmission. A new type of coherent disorder in interchain couplings is proposed which can enhance thetransmission coefficient remarkably. Our results may shed light on the understanding of the transport properties in the fibril‐form polymers.