# Electronic structure and magnetic properties of the graphene/Ni3Mn/Ni(111) trilayer

## TL;DR

This study combines experimental and theoretical methods to investigate how manganese intercalation forms a ferromagnetic Ni3Mn layer beneath graphene on Ni(111), altering electronic and magnetic properties.

## Contribution

It provides new insights into the formation and effects of Ni3Mn interlayers on graphene's electronic and magnetic structure, supported by DFT calculations and experimental data.

## Key findings

- Ni3Mn layer forms upon Mn intercalation, protected by graphene.
- Graphene's electronic bands show reduced n-type doping.
- Magnetic structure of graphene is significantly influenced by Ni3Mn formation.

## Abstract

Experimental and theoretical studies of manganese deposition on graphene/Ni(111) shows that a thin ferromagnetic Ni3Mn layer, which is protected by the graphene overlayer, is formed upon Mn intercalation. The electronic bands of graphene are affected by Ni3Mn interlayer formation through a slight reduction of n-type doping compared to graphene/Ni(111) and a suppression of the interface states characteristic of graphene/Ni(111). Our DFT-based theoretical analysis of interface geometric, electronic, and magnetic structure gives strong support to our interpretation of the experimental scanning tunneling microscopy, low energy electron diffraction, and photoemission results, and shows that the magnetic structure of graphene is strongly influenced by Ni3Mn formation.