Electronic spectrum in 2D Dirac materials under strain

We study the electronic spectrum in 2D Dirac materials using (2 + 1) dimensional Dirac equation in the presence of strain induced position dependent Fermi velocity and electromagnetic potentials. In particular, we consider some Fermi velocity profiles along with electromagnetic fields as well as ban...

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Bibliographic Details
Published inPhysica. E, Low-dimensional systems & nanostructures Vol. 121; p. 114084
Main Authors Phan, Anh-Luan, Le, Dai-Nam, Le, Van-Hoang, Roy, Pinaki
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.07.2020
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Summary:We study the electronic spectrum in 2D Dirac materials using (2 + 1) dimensional Dirac equation in the presence of strain induced position dependent Fermi velocity and electromagnetic potentials. In particular, we consider some Fermi velocity profiles along with electromagnetic fields as well as band gap and analyze the conditions for the existence of bound states. In both the cases we obtain the spectrum analytically and examine in detail the effect of position dependent Fermi velocity and electromagnetic fields on the spectrum. We have also investigated the effect of Fermi velocity (and band gap) on localization of the quasiparticles. •Solutions of the Dirac Equation under inhomogeneous strain, mass gap and electromagnetic fields are obtained.•Conditions for existence of bounds states have been examined.•Localization of quasiparticles have been examined.
ISSN:1386-9477
1873-1759
DOI:10.1016/j.physe.2020.114084