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Science China Press

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(a) Schematic crystal structure of MnBi2Te4. The red and blue arrows denote magnetic moments of Mn atoms. (b) High-Chern-number (C=2) Chern insulator state in 10-SL MnBi2Te4 device. (c) Schematic C=2 Chern insulator state with two dissipationless edge states. The two different colors are used to distinguish the adjacent MnBi2Te4 SLs. (d), (e), (f) High-temperature Chern insulator state in 7-SL MnBi2Te4 device.

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