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arXiv · 2005.09948

Effects of Fermi velocity engineering in magnetic graphene superlattices

Ícaro S. F. Bezerra·Jonas R. F. Lima
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Abstract

In this work we investigate theoretically the influence of a Fermi velocity modulation in the electronic and transport properties of magnetic graphene superlattices. We solve the effective Dirac equation for graphene with a position dependent vector potential and Fermi velocity and use the transfer matrix method to obtain the transmission coefficient for the finite cases and the dispersion relation for a periodic superlattice. Our results reveals that the Fermi velocity modulation can control the resonance peaks of the transmittance and also works as a switch, turning on/off the transmission through the magnetic barriers. The results obtained here can be used for the fabrication of graphene-based electronic devices.

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Ícaro S. F. Bezerra, Jonas R. F. Lima. 2020-05-20. Effects of Fermi velocity engineering in magnetic graphene superlattices. https://doi.org/10.1016/j.physe.2020.114171

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