Interface states in bilayer graphene and valleytronics

TL;DR

This paper investigates unique interface states in bilayer graphene that exhibit contrasting valley-dependent properties, enabling potential advancements in valleytronics without complex experimental setups.

Contribution

It reveals novel interface states in bilayer graphene with valley-dependent properties, facilitating easier experimental realization of valleytronic functionalities.

Findings

Interface states have unusual properties not seen in conventional systems.

Valley-dependent states allow for simpler valleytronic device implementation.

Contrasting properties between valleys enable new control mechanisms.

Abstract

We study the states localized near an interface between conducting and insulating bilayer graphene (BLG) and show that they have highly unusual properties that have no analog in conventional systems. Moreover, the states belonging to the two independent valleys in the Brillouin zone of BLG show contrasting properties that allows a relatively easier experimental realization of various valley based functionalities desired in valleytronics without requiring any sophisticated techniques.