Resonant modes in strain-induced graphene superlattices

Abstract

We study tunneling across a strain-induced superlattice in graphene. In studying the effect of applied strain on the low-lying Dirac-like spectrum, both a shift of the Dirac points in reciprocal space, and a deformation of the Dirac cones is explicitly considered. The latter corresponds to an anisotropic, possibly non-uniform, Fermi velocity. Along with the modes with unit transmission usually found across a single barrier, we analytically find additional resonant modes when considering a periodic structure of several strain-induced barriers. We also study the band-like spectrum of bound states, as a function of conserved energy and transverse momentum. Such a strain-induced superlattice may thus effectively work as a mode filter for transport in graphene.

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Cited by in corpus (8)

• Novel effects of strains in graphene and other two dimensional materials
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• Topological edge states on time-periodically strained armchair graphene nanoribbons
• Analytic approach to magneto-strain tuning of electronic transport through a graphene nanobubble: Perspectives for a strain sensor
• Electronic beam shifts in monolayer graphene superlattice
• Electronic transport in disordered graphene superlattices with scale-free correlated barrier spacements
• Tunable Dirac points and zero-energy modes in periodic curved graphene superlattices
• Mode-Resolved Multiband Ballistic Transport and Conductance Thresholds in Bilayer Graphene Junctions