# Realization of Quantum Anomalous Hall Effect in Graphene from \textit{n}-\textit{p} Codoping Induced Stable Atomic-Adsorption

## TL;DR

This study demonstrates that stable atomic adsorption through n-p codoping in graphene can induce quantum anomalous Hall effect, with Ni codopants creating a global gap and ferromagnetism achievable above 10 Kelvin.

## Contribution

The paper introduces a first-principles method to realize quantum anomalous Hall effect in graphene via stable 3d-atomic adsorption through charge-compensated n-p codoping, highlighting Ni as an effective dopant.

## Key findings

- Ni codoping opens a global bulk gap in graphene.
- Ferromagnetic transition temperature exceeds 10 Kelvin.
- Long-range ferromagnetism can be achieved through 3d transition metal and boron codoping.

## Abstract

Using first-principles calculation methods, we study the possibility of realizing quantum anomalous Hall effect in graphene from stable 3\textit{d}-atomic adsorption via charge-compensated \textit{n}-\textit{p} codoping scheme. As concrete examples, we show that long-range ferromagnetism can be established by codoping 3\textit{d} transition metal and boron atoms, but only the Ni codopants can open up a global bulk gap to harbour the quantum anomalous Hall effect. Our estimated ferromagnetic Curie transition temperature can reach over 10 Kelvin for various codoping concentrations.