第二类拓扑外尔半金属WP_(2)高压超导相的常压截获  

Interception of High-Pressure Superconducting Phase of Type-Ⅱ Topological WeyⅠ Semimetal WP_2 at Ambient Pressure

作　　者：彭锦锋 迟振华 崔田 PENG Jinfeng;CHI Zhenhua;CUI Tian(Institute of High Pressure Physics,School of Physical Science and Technology,Ningbo University,Ningbo 315211)

机构地区：[1]宁波大学物理科学与技术学院高压物理科学研究院,宁波315211

出　　处：《低温物理学报》2023年第1期55-58,共4页Low Temperature Physical Letters

基　　金：宁波大学科研启动项目(批准号:ZX2022000142);浙江省科技创新团队项目(批准号:2021R01004)资助的课题。

摘　　要：第二类拓扑外尔半金属WP_(2)高压下发生超导转变,然而,高压超导相能否在常压截获还没有相关报道.本文对密封于金刚石对顶砧中的WP_(2)高压超导相在室温条件下快速卸压至不同压强,原位测量电阻-温度曲线,验证能否在常压截获高压超导相.研究表明:WP_(2)的高压超导相可以在常压截获,从而提供了一个通过角分辨光电子能谱和扫描隧道谱探寻马约拉纳零能模的拓扑超导体材料平台.The type-Ⅱ topological WeyⅠ semimetal WP_2 is pressurized to exhibit superconductivity.However,whether the high-pressure superconducting phase could be intercepted at ambient pressure or not is unclear.In this paper,we rapidly decompress the high-pressure superconducting phase sealed in the sample chamber of diamond anvil cell at room temperature,in order to check the possibility of interception at ambient pressure.It is demonstrated that the high-pressure superconducting phase could be intercepted at ambient pressure.The high-pressure superconducting phase intercepted at ambient pressure is a promising candidate of topological superconductor.

关 键 词：高压 拓扑外尔半金属 超导电性 常压截获 

分 类 号：O469[理学—凝聚态物理]