Novel magnetic topological insulator FeBiTe with controllable topological quantum phase
arXiv:2308.06716 · doi:10.1039/D3TC01890C
Abstract
Here, we report a new intrinsic magnetic topological insulator FeBiTe based on first-principles calculations and it can achieve a rich topological phase under pressure modulation. Without pressure, we predict that both FeBiTe ferromagnetic and antiferromagnetic orders are non-trivial topological insulators. Furthermore, FeBiTe of FM-z order will undergo a series of phase transitions from topological insulator to semimetals and then to trivial insulator under pressure. Finally, we further clarify and verify topological phase transitions with low-energy effective model calculations. This topological phase transition process is attributed to the synergy of the magnetic moment and the spin-orbit coupling. The unique topological properties of FeBiTe will be of great interest in driving the development of quantum effects.
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