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arXiv · 1704.02085

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

Xinzhou Deng·Shifei Qi·Yulei Han·Kunhua Zhang·Xiaohong Xu·Zhenhua Qiao
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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.

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Xinzhou Deng, Shifei Qi, Yulei Han, Kunhua Zhang, Xiaohong Xu, Zhenhua Qiao. 2017-04-07. Realization of Quantum Anomalous Hall Effect in Graphene from \textit{n}-\textit{p} Codoping Induced Stable Atomic-Adsorption. https://doi.org/10.1103/physrevb.95.121410

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