Regulating spin dynamics of graphene flakes

TL;DR

This paper analyzes a method to control spin dynamics in magnetic graphene, using defects and external pulses, with implications for spintronics and quantum information processing.

Contribution

It introduces a technique to regulate spin flips in magnetic graphene via resonator feedback, enhancing spin reversal speed for technological applications.

Findings

Resonator feedback field accelerates spin reversal

Defects enable incorporation of local magnetic moments

Fast spin reversal is achievable for spintronics

Abstract

A method of regulating spin dynamics of the so-called magnetic graphene is analyzed. Magnetic moments can be incorporated into graphene flakes and graphene ribbons through defects, such as adatoms and vacancies. Local spins can also be attached to graphene at hydrogenated zigzag edges. Spin flips can be produced by transverse pulses and by connecting the sample to a resonance electric coil. The action of the resonator feedback field strongly accelerates spin reversal. The possibility of fast spin reversal is important for spintronics and for quantum information processing allowing for an efficient functioning of spin registers.