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Optical transition energies in armchair‐edge graphene nanoribbons under uniaxial strain
Author(s) -
Han Mei,
Zhang Yong
Publication year - 2012
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.201248098
Subject(s) - materials science , condensed matter physics , enhanced data rates for gsm evolution , graphene , strain (injury) , graphene nanoribbons , distortion (music) , band gap , molecular physics , nanotechnology , optoelectronics , physics , medicine , telecommunications , amplifier , cmos , computer science
The optical transition energies of armchair‐edge graphene nanoribbons (AGNRs) under uniaxial strain have been studied based on tight‐binding model including up to third‐nearest‐neighbor carbon–carbon interaction and edge distortion. Obtained results show that the optical transition energies of AGNRs are sensitive to the uniaxial strain. The variations of optical transition energies on the uniaxial strains are linear but not monotonic, displaying an “ N ” or an upside‐down “ N ” type feature. The mechanism underlying the strain effects on optical transition energies has been revealed. The obtained optical transition energies can be used to help evaluating the future experiments on optical properties of strained AGNRs.