Pressure-cycling induced transition behaviors of MnBi2Te4
Jie Wu1,2, Yan Feng3, Yifeng Ren2
1Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China.
Abstract:
MnBi2Te4 can generate a variety of exotic topological quantum states, which are closely related to its special structure. We conduct comprehensive multiple-cycle high-pressure research on MnBi2Te4 by using a diamond anvil cell to study its phase transition behaviors under high pressure. As observed, when the pressure does not exceed 15 GPa, the material undergoes an irreversible metal-semiconductor-metal transition, whereas when the pressure exceeds 17 GPa, the layered structure is damaged and becomes irreversibly amorphous due to the lattice distortion caused by compression, but it is not completely amorphous, which presents some nano-sized grains after decompression. Our investigation vividly reveals the phase transition behaviors of MnBi2Te4 under high pressure cycling and paves the experimental way to find topological phases under high pressure.
Related Concept Videos
Phase Transitions
Bonding in Metals
States of Matter and Phase Changes
Properties of Transition Metals
Phase Transitions: Sublimation and Deposition
Atomic Nuclei: Nuclear Relaxation Processes


