Author(s): Ren, Y (Ren, Yi); Ke, SS (Ke, Shasha); Lou, WK (Lou, Wen-Kai); Chang, K (Chang, Kai)

Source: PHYSICAL REVIEW B Volume: 106 Issue: 23 Article Number: 235302 DOI: 10.1103/PhysRevB.106.235302 Published: DEC 2 2022

Abstract: Layered material MnBi2Te4 has bridged the fields of topology, magnetism and two-dimensional (2D) van der Waals materials, and attracted tremendous interest recently. Based on the first-principles calculation, we find that the topological, magnetic and ferroelectric properties of MnBi2Te4 bilayer can be engineered by interlayer sliding. By sliding bilayer MnBi2Te4, the interlayer exchange interaction can be tuned between ferromagnetic and antiferromagnetic, enabling the transition from ferromagnetic insulators to Chern insulators, and the charge transfer would lead to coexistence with antiferromagnetic and ferroelectric phases. Our work paves a different mechanical way to engineer quantum phases in 2D magnetic materials.

Accession Number: WOS:000918963100002

ISSN: 2469-9950

eISSN: 2469-9969

Full Text: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.106.235302