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

ORAL

Abstract

Using first-principles calculation methods, we study the possibility of realizing quantum anomalous Hall effect in graphene from stable 3d-atomic adsorption via charge-compensated n-p codoping scheme. As concrete examples, we show that long-range ferromagnetism can be established by codoping 3d 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.

–

Authors

  • Xinzhou Deng

    • ICQD and Department of Physics, University of Science and Technology of China, China

  • Shifei Qi

    • School of Chemistry and Materials Science, Shanxi Normal University, China

  • Yulei Han

    • ICQD and Department of Physics, University of Science and Technology of China, China

  • Kunhua Zhang

    • ICQD and Department of Physics, University of Science and Technology of China, China

  • Xiaohong Xu

    • School of Chemistry and Materials Science, Shanxi Normal University, China

  • Zhenhua Qiao

    • University of Science and Technology of China
    • Univ. of Sci. and Tech. of China
    • ICQD and Department of Physics, University of Science and Technology of China, China
    • University of Science and Technolgy of China
    • Univ of Sci \& Tech of China