Fermi Velocity Modulation in Graphene by Strain Engineering

Harihar Behera; Gautam Mukhopadhyay

doi:10.1063/1.4791060

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arXiv · 1302.1843

Fermi Velocity Modulation in Graphene by Strain Engineering

Harihar Behera·Gautam Mukhopadhyay

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Abstract

Using full-potential density functional theory (DFT) calculations, we found a small asymmetry in the Fermi velocity of electrons and holes in graphene. These Fermi velocity values and their average were found to decrease with increasing in-plane homogeneous biaxial strain; the variation in Fermi velocity is quadratic in strain. The results, which can be verified by Landau level spectroscopy and quantum capacitance measurements of bi-axially strained graphene, promise potential applications in graphene based straintronics and flexible electronics.

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Harihar Behera, Gautam Mukhopadhyay. 2013-02-07. Fermi Velocity Modulation in Graphene by Strain Engineering. https://doi.org/10.1063/1.4791060

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