Grüneisen parameter of the G mode of strained monolayer graphene

Abstract
We present a detailed analysis of the effects of uniaxial and biaxial strain on the frequencies of the G mode of monolayer graphene, using first principles calculations. Our results allow us to explain discrepancies in the experimentally determined values of the Grüneisen parameter. The direction and strength of the applied strain, Poisson's ratio of the substrate, and the intrinsic strain in different experimental setups turn out to be important. A reliable determination of the Grüneisen parameter is a prerequisite of strain engineering.

Citation
Cheng YC, Zhu ZY, Huang GS, Schwingenschlögl U (2011) Grüneisen parameter of the G mode of strained monolayer graphene. Phys Rev B 83. doi:10.1103/PhysRevB.83.115449.

Publisher
American Physical Society (APS)

Journal
Physical Review B

DOI
10.1103/PhysRevB.83.115449

Additional Links
http://link.aps.org/doi/10.1103/PhysRevB.83.115449

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