All-strain based valley filter in graphene nanoribbons using snake states

Abstract

A pseudo-magnetic field kink can be realized along a graphene nanoribbon using strain engineering. Electron transport along this kink is governed by snake states that are characterized by a single propagation direction. Those pseudo-magnetic fields point towards opposite directions in the K and K' valleys, leading to valley polarized snake states. In a graphene nanoribbon with armchair edges this effect results in a valley filter that is based only on strain engineering. We discuss how to maximize this valley filtering by adjusting the parameters that define the stress distribution along the graphene ribbon.

8 pages, 6 figures

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Cited by in corpus (8)

• Graphene Nanobubbles as Valley Filters and Beamsplitters
• Valleytronics in merging Dirac cones: All-electric-controlled valley filter, valve and universal reversible logic gate
• Strain controlled valley filtering in multi-terminal graphene structures
• Electron dynamics in strained graphene
• Valley filtering in strain-induced $\alpha$-${\mathcal{T}}_3$ quantum dots
• Valley isospin of interface states in a graphene $pn$ junction in the quantum Hall regime
• Electronic and transport properties of anisotropic semiconductor quantum wires
• Emergence of strain-induced moiré patterns and pseudo-magnetic field confined states in graphene