| 摘要: |
| 第二类拓扑外尔半金属WP2高压下发生超导转变，然而，高压超导相能否在低压甚至常压截获尚不清楚。本文对密封于金刚石对顶砧中的WP2高压超导相在室温条件下进行快速卸压，通过测量低温电阻对温度的依赖关系，验证能否在低压甚至常压截获高压超导相。实验结果表明：WP2的超导电性可以维持到常压，即高压超导相可以在常压截获，常压截获的高压超导相可能是一种有应用前景的拓扑超导体候选材料。 |
| 关键词: 高压，拓扑外尔半金属，超导电性，常压截获 |
| DOI： |
| 投稿时间：2023-03-04修订日期：2023-03-22 |
| 基金项目: |
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| Interception of High-Pressure Superconducting Phase of Type-II Topological Weyl Semimetal WP2 at Ambient Pressure* |
|
PENG Jinfeng, CHI Zhenhua, CUI Tian
|
| (Institute of High Pressure Physics, School of Physical Science and Technology, Ningbo University) |
| Abstract: |
| The type-II topological Weyl semimetal WP2 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. |
| Key words: High pressure, Topological Weyl semimetal, Superconductivity, Interception at ambient pressure |