Rashba spin-orbit-interaction-based quantum pump in graphene

TL;DR

This paper proposes a graphene-based adiabatic quantum pump utilizing inhomogeneous Rashba and intrinsic spin-orbit interactions to generate spin-polarized currents through spin-double refraction.

Contribution

It introduces a novel graphene quantum pump design that leverages spin-orbit interactions to produce spin-polarized currents in the Dirac regime.

Findings

Generation of spin-polarized current via adiabatic pumping

Utilization of spin-double refraction phenomenon

Operation in low-energy Dirac regime

Abstract

We present a proposal for an adiabatic quantum pump based on a graphene monolayer patterned by electrostatic gates and operated in the low-energy Dirac regime. The setup under investigation works in the presence of inhomogeneous spin-orbit interactions of intrinsic- and Rashba-type and allows to generate spin polarized coherent current. A local spin polarized current is induced by the pumping mechanism assisted by the spin-double refraction phenomenon.