Title : ( The role of electron–phonon interaction on the transport properties of graphene based nano-devices )
Authors: A. Mogulkoc , Sayyed Mohsen Modarresi Saryazdi , B.S. Kandemir , Mahmood Rezaee Roknabadi , Nasser Shahtahmassebi , Mohammad Behdani ,
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Abstract
Transport through a nano-device in the presence of electron–phonon interaction has been studied by using unitary-transformation scheme together with the non-equilibrium Green׳s function formalism. The non-interacting Hamiltonian is written within the tight binding model and left/right electrodes are described in wide-band approximation. The interaction between electrons is studied in the mean-field Hubbard model. Our results indicate that both phonon-restricted and phonon-assisted transport through two different configurations of graphene quantum dot occur. Also, the electron–phonon interaction screens the electron–electron interaction, and reduces the spin polarization.
Keywords
Graphene quantum dot; Electronic transport; Holstein–Hubbard model; Electron–phonon interaction
@article{paperid:1042707,
author = {A. Mogulkoc and Modarresi Saryazdi, Sayyed Mohsen and B.S. Kandemir and Rezaee Roknabadi, Mahmood and Shahtahmassebi, Nasser and Behdani, Mohammad},
title = {The role of electron–phonon interaction on the transport properties of graphene based nano-devices},
journal = {Physica B: Condensed Matter},
year = {2014},
volume = {446},
number = {1},
month = {August},
issn = {0921-4526},
pages = {85--91},
numpages = {6},
keywords = {Graphene quantum dot; Electronic transport; Holstein–Hubbard model; Electron–phonon interaction},
}
%0 Journal Article
%T The role of electron–phonon interaction on the transport properties of graphene based nano-devices
%A A. Mogulkoc
%A Modarresi Saryazdi, Sayyed Mohsen
%A B.S. Kandemir
%A Rezaee Roknabadi, Mahmood
%A Shahtahmassebi, Nasser
%A Behdani, Mohammad
%J Physica B: Condensed Matter
%@ 0921-4526
%D 2014
