# Single layer graphene with electronic properties as gated bilayer

## TL;DR

This paper shows that single layer graphene can mimic bilayer electronic properties when connected to gated bilayers, exhibiting an induced energy gap and topologically protected states useful for nanoelectronics.

## Contribution

It introduces a method to induce bilayer-like electronic properties and topological states in single layer graphene via gating and stacking order manipulation.

## Key findings

- Energy gap induced in single layer graphene by gated bilayers
- Topologically protected gapless states appear with stacking order differences
- One-dimensional current flows in the topological state

## Abstract

We demonstrate that single layer graphene exhibits the electronic structure of a bilayer when it is connected to two gated bilayers. The energy gap characteristic for gated bilayer is induced in the single layer and it persists for distances separating the bilayers up to 20 nm. Most importantly, we report on the appearance of topologically protected gapless state localized in a single graphene layer when the distant bilayers differ in the stacking order. The one-dimensional current in the topological state flows in a single layer graphene, and this finding suggests a new exploitation of graphene in nanoelectronics.