TY - JOUR
T1 - The Two-Dimensional MnO2/Graphene Interface: Half-metallicity and Quantum Anomalous Hall State
AU - Gan, Liyong
AU - Zhang, Qingyun
AU - Guo, Chun-Sheng
AU - Schwingenschlögl, Udo
AU - Zhao, Yong
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2016/1/21
Y1 - 2016/1/21
N2 - We explore the electronic properties of the MnO2/graphene interface by first-principles calculations, showing that MnO2 becomes half-metallic. MnO2 in the MnO2/graphene/MnO2 system provides time-reversal and inversion symmetry breaking. Spin splitting by proximity occurs at the Dirac points and a topologically nontrivial band gap is opened, enabling a quantum anomalous Hall state. The half-metallicity, spin splitting, and size of the band gap depend on the interfacial interaction, which can be tuned by strain engineering.
AB - We explore the electronic properties of the MnO2/graphene interface by first-principles calculations, showing that MnO2 becomes half-metallic. MnO2 in the MnO2/graphene/MnO2 system provides time-reversal and inversion symmetry breaking. Spin splitting by proximity occurs at the Dirac points and a topologically nontrivial band gap is opened, enabling a quantum anomalous Hall state. The half-metallicity, spin splitting, and size of the band gap depend on the interfacial interaction, which can be tuned by strain engineering.
UR - http://hdl.handle.net/10754/579565
UR - http://pubsdc3.acs.org/doi/10.1021/acs.jpcc.5b08272
UR - http://www.scopus.com/inward/record.url?scp=84957922237&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.5b08272
DO - 10.1021/acs.jpcc.5b08272
M3 - Article
SN - 1932-7447
VL - 120
SP - 2119
EP - 2125
JO - The Journal of Physical Chemistry C
JF - The Journal of Physical Chemistry C
IS - 4
ER -