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