Transmission in graphene-topological insulator heterostructures

Abstract

We investigate scattering of the topological surface state of a three-dimensional time-reversal invariant topological insulator when graphene is deposited on the topological-insulator surface. Specifically, we consider the (111) surface of a Bi${}_2$Se${}_3$-like topological insulator. We present a low-energy model for the bulk graphene-topological insulator heterostructure and we calculate the transmission probability at zigzag and armchair edges of the deposited graphene, and the conductance through graphene nanoribbon barriers and show that its features can be understood from antiresonances in the transmission probability.

arXiv comment11 pages, 12 figures, 1 table

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Cited by in corpus (4)

• Spin Proximity Effects in Graphene/Topological Insulator Heterostructures
• Twist-angle dependent proximity induced spin-orbit coupling in graphene/topological insulator heterostructures
• Magic angle conditions for twisted 3D topological insulators
• Proximity-Induced Spin-Orbit Coupling in Graphene-Bi${}_{1.5}$Sb${}_{0.5}$Te${}_{1.7}$Se${}_{1.3}$ Heterostructures