Doping the spin-polarized Graphene minicone on Ni(111)

TL;DR

This paper theoretically investigates doping spin-polarized graphene on Ni(111) with rare-earth ions, demonstrating the potential to induce spin-polarized states similar to those observed on Co(0001), and explains the charge transfer mechanisms involved.

Contribution

It introduces a theoretical approach to doping graphene on Ni(111) with rare-earth ions to induce spin-polarized states, extending previous work on Co(0001).

Findings

Identification of suitable rare-earth ions for doping

Explanation of charge transfer effects behind spin polarization

Prediction of mini-cone states in doped graphene on Ni(111)

Abstract

In the attempt to induce spin-polarized states in graphene, rare-earth deposition on Gr/Co(0001) has been demonstrated to be a successful strategy: the coupling of graphene with the cobalt substrate provides spin-polarized conical-shaped states (mini-cone) and the rare-earth deposition brings these states at the Fermi level. In this manuscript we theoretically explore the feasibility of an analogue approach applied on Gr/Ni(111) doped with rare-earth ions. Even if not well mentioned in the lecture also this system owns a mini-cone, similar to the cobalt case. By testing different rare-earth ions, not only we suggest which one can provide the required doping but we explain the effect behind this proper charge transfer.