Physica E, ( ISI ), Volume (66), No (1), Year (2015-2) , Pages (303-308)

Title : ( Possible polaron formation of zigzag graphene nano-ribbon in the )

Authors: Sayyed Mohsen Modarresi Saryazdi , A. Mogulkoc , Mahmood Rezaee Roknabadi , Nasser Shahtahmassebi ,

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In this article we study the role of Rashba spin–orbit coupling and electron–phonon interaction on the electronic structure of zigzag graphene nanoribbon with different width. The total Hamiltonian of nanoribbon is written in the tight binding form and the electron–electron interaction is modeled in the Hubbard term. We used a unitary transformation to reach an effective Hamiltonian for nano ribbon in the presence of electron–phonon interaction. Our results show that small Rashba spin orbit coupling annihilates the anti-ferromagnetic phase in the zigzag edges of ribbon and the electron–phonon interaction yields small polaron formation in graphene nano ribbon. Furthermore, Rashba type spin–orbit coupling increases (decreases) the polaron formation energy for up (down) spin state.


, Zigzag graphene nanoribbon, Rashba spin–orbit coupling, Hubbard interaction,
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author = {Modarresi Saryazdi, Sayyed Mohsen and A. Mogulkoc and Rezaee Roknabadi, Mahmood and Shahtahmassebi, Nasser},
title = {Possible polaron formation of zigzag graphene nano-ribbon in the},
journal = {Physica E},
year = {2015},
volume = {66},
number = {1},
month = {February},
issn = {1386-9477},
pages = {303--308},
numpages = {5},
keywords = {Zigzag graphene nanoribbon; Rashba spin–orbit coupling; Hubbard interaction; Tight-binding},


%0 Journal Article
%T Possible polaron formation of zigzag graphene nano-ribbon in the
%A Modarresi Saryazdi, Sayyed Mohsen
%A A. Mogulkoc
%A Rezaee Roknabadi, Mahmood
%A Shahtahmassebi, Nasser
%J Physica E
%@ 1386-9477
%D 2015