Intrinsic magnetic topological phases in a two-dimensional MnPSe3 monolayer
ORAL
Abstract
The recent observation of ferromagnetic (FM) topological insulators provides a promising platform for understanding the interplay between the band topology and magnetic order. Despite this, intrinsic magnetism of monolayer topological systems has not yet been experimentally realized so far. Here, we study the electronic properties of FM MnPSe3 monolayer to identify its topological nontrivial features with first-principles density-functional-theory (DFT) calculations and a designed tight-binding (TB) model. We demonstrate that magnetic-orientation-dependent different topological states including the quantum anomalous Hall effect (QAHE) and time-reversal symmetry broken quantum spin Hall effect (QSHE) can be obtained in MnPSe3 monolayer, manifesting a promising material realization of topological spintronics in two-dimensional ferromagnet.
*This work was funded by the US Department of Energy, Office of Science, National Quantum Information Science Research Centers, Quantum Systems Accelerator (QSA). Work at the Molecular Foundry was supported by the Office of Science, Office of Basic Energy Sciences, of the US Department of Energy under Contract No. DE-AC02- 05CH11231. This research used resources of the National Energy Research Scientific Computing Center (NERSC), a US Department of Energy Office of Science User Facility operated under Contract No. DE-AC02-05CH11231.
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Presenters
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Ilyoun Na
- Department of Physics, UC Berkeley