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• W2891713311 abstract "Although the quantum anomalous Hall (QAH) effect has been experimentally observed in several magnetically doped topological insulators, up to now, it only survives at a very low temperature. More suitable candidate QAH insulators that can work at high temperature are much desired. Here, we propose an experimentally feasible way to realize a robust QAH insulator: atomically dispersed transition metals (e.g., W) on a two-dimensional porous metal halide normal insulator (e.g., ${mathrm{InI}}_{3}$), which has been developed as a state-of-the-art chemical technology broadly adopted for homogeneous catalysis. Based on the first-principles calculations, we predict that the atomic W embedded in an ${mathrm{InI}}_{3}$ monolayer forms an intrinsic ferromagnetic QAH insulator, which exhibits robust uniform out-of-plane ferromagnetic order up to $ensuremath{sim}160phantom{rule{0.16em}{0ex}}mathrm{K}$ and a topologically nontrivial band gap of 56 meV with a nonzero Chern number $(|C|=2)$. We also study its magneto-optical Kerr effect and collective plasma excitation modes, which may help for further experimental verifications and measurement of interesting physical features of Dirac-like electronic dispersion. Our results introduce a feasible method to obtain the QAH effect, which may motivate intensive experimental interest in this field." @default.
• W2891713311 created "2018-09-27" @default.
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• W2891713311 date "2018-09-14" @default.
• W2891713311 modified "2023-10-15" @default.
• W2891713311 title "Atomically dispersed tungsten on metal halide monolayer as a ferromagnetic Chern insulator" @default.
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• W2891713311 doi "https://doi.org/10.1103/physrevb.98.115424" @default.
• W2891713311 hasPublicationYear "2018" @default.
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