Quantum anomalous Hall effect of Dirac half-metal monolayer TiCl3 with high Chern number
- 1 October 2021
- journal article
- research article
- Published by IOP Publishing in Europhysics Letters
- Vol. 136 (2), 27004
- https://doi.org/10.1209/0295-5075/ac23e9
Abstract
Based on first-principles calculations, monolayer TiCI3 is predicted to be a 100% spin-polarized Dirac half-metal with ferromagnetic Curie temperature T-c of 63K as predicted from Monte Carlo simulations. When considering the spin-orbit coupling, the Dirac point in the spin-up opens a similar to 3 meV band gap. The calculated result of the anomalous Hall conductivity shows the Chern number C = 3, indicating that three corresponding gapless chiral edge states have emerged inside the bulk gap. Our findings suggest a feasible new member of the quantum anomalous Hall insulator family with promising applications in spintronic devices without dissipation edge states. Copyright (C) 2022 EPLAFunding Information
- National Natural Science Foundation of China (12004097)
- National Natural Science Foundation of China (61671199)
- Natural Science Foundation of Hebei Province (A2020202010)
- Natural Science Foundation of Hebei Province (A2020202031)
This publication has 64 references indexed in Scilit:
- Massive Dirac quasiparticles in the optical absorbance of graphene, silicene, germanene, and tineneJournal of Physics: Condensed Matter, 2013
- Liquid Exfoliation of Layered MaterialsScience, 2013
- Quantum Anomalous Hall Effect inQuantum WellsPhysical Review Letters, 2008
- wannier90: A tool for obtaining maximally-localised Wannier functionsComputer Physics Communications, 2008
- Fractional Quantum Hall Effect in an Array of Quantum WiresPhysical Review Letters, 2002
- Electron-energy-loss spectra and the structural stability of nickel oxide: An LSDA+U studyPhysical Review B, 1998
- Projector augmented-wave methodPhysical Review B, 1994
- García, Huerta, and Kielanowski ReplyPhysical Review Letters, 1988
- Quantized Hall Conductance in a Two-Dimensional Periodic PotentialPhysical Review Letters, 1982
- Special points for Brillouin-zone integrationsPhysical Review B, 1976