Pseudospin valve in bilayer graphene: towards graphene-based pseudospintronics

TL;DR

This paper introduces a pseudospin valve in bilayer graphene controlled by external gates, demonstrating potential for pseudospintronics with high on-off ratios, advancing graphene-based electronic devices.

Contribution

It presents the concept and numerical validation of a pseudospin valve in bilayer graphene, a novel approach for pseudospintronics.

Findings

Large on-off ratio demonstrated in simulations

Pseudospin polarization controlled by external gates

Potential for graphene-based pseudospintronic devices

Abstract

We propose a non-magnetic, pseudospin-based version of a spin valve, in which the pseudospin polarization in neighboring regions of a graphene bilayer is controlled by external gates. Numerical calculations demonstrate a large on-off ratio of such a device. This finding holds promise for the realization of pseudospintronics: a form of electronics based upon the manipulation of pseudospin analogous to the control of physical spin in spintronics applications.