Title : ( The role of impurities on the properties of electron transport through themetal/ Polyacetylene/ metal:a Green’s function approach )
Authors: mojtaba ashhdi , S.A.Ketabi , Nasser Shahtahmassebi , davoud vahedi , mostafa asgarifarsangi ,
Full TextAbstract
a b s t r a c t In thiswork,wepresentatheoreticalstudyontheconductanceof trans-polyacetylene(trans-PA) nanowireinthepresenceofimpuritiesanduseof trans-PA asamolecularbridgesandwichedbetween two semi-infinitemetallicelectrodeswithasimplecubicstructureandsquarecrosssection.Weusea tight-bindingHamiltonianmodelwithintheframeworkofageneralizedGreen’sfunctiontechniqueand rely ontheLandauer–B ¨ utikkerformalismasthebasisforstudyingthecurrent–voltagecharacteristicof this system.Ourcalculationsindicatethatthepresenceofimpuritiesgivesrisetosignificant enhancementinthedensityofstateswithinthebandgapandlargeenhancementinconductanceand the current–voltagecharacteristic.Alsoourresultsshowthattheelectronicpropertiesofthesystemare sensitivetothemolecule-to-impuritycouplingstrength.
Keywords
, impurity, electron transport, polyacetylene, Green’s function
@article{paperid:1019938,
author = {Ashhdi, Mojtaba and S.A.Ketabi and Shahtahmassebi, Nasser and Vahedi, Davoud and Asgarifarsangi, Mostafa},
title = {The role of impurities on the properties of electron transport through themetal/ Polyacetylene/ metal:a Green’s function approach},
journal = {Physica E},
year = {2011},
volume = {43},
number = {4},
month = {February},
issn = {1386-9477},
pages = {924--928},
numpages = {4},
keywords = {impurity;electron transport;polyacetylene;Green’s function},
}
%0 Journal Article
%T The role of impurities on the properties of electron transport through themetal/ Polyacetylene/ metal:a Green’s function approach
%A Ashhdi, Mojtaba
%A S.A.Ketabi
%A Shahtahmassebi, Nasser
%A Vahedi, Davoud
%A Asgarifarsangi, Mostafa
%J Physica E
%@ 1386-9477
%D 2011
