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Type: 
Journal
Description: 
We study the dependence of the plasmon dispersion relation of graphene on applied uniaxial strain. Besides electron correlation at the random-phase approximation level, we also include local field effects specific for the honeycomb lattice. As a consequence of the two-band character of the electronic band structure, we find two distinct plasmon branches. We recover the square-root behavior of the low-energy branch, and find a nonmonotonic dependence of the strain-induced modification of its stiffness, as a function of the wave-vector orientation with respect to applied strain.
Publisher: 
American Physical Society
Publication date: 
17 Sep 2010
Authors: 

FMD Pellegrino, GGN Angilella, R Pucci

Biblio References: 
Volume: 82 Issue: 11 Pages: 115434
Origin: 
Physical Review B