无定形固体
相变
材料科学
自行车
金刚石顶砧
高压
格子(音乐)
压缩(物理)
凝聚态物理
拓扑(电路)
化学物理
纳米技术
结晶学
工程物理
复合材料
化学
物理
电气工程
工程类
考古
声学
历史
作者
Jie Wu,Yan Feng,Yifeng Ren,Ziyou Zhang,Yanping Yang,X. W. Wang,Fuhai Su,Hongliang Dong,Lei Yang,Xiaojun Zhang,Yu Deng,Bin Xiang,Z. Y. Chen
摘要
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.
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