结构性和超导特性Bi2Rh3(Se1-S) 2 (x = 0-1.0) 的结构性和超导性
Zhiyan Zhang1, Wanli Pan1, Masaki Utsumi1
1Research Institute for Interdisciplinary Science, Okayama University, Okayama 700-8530, Japan.
Inorganic chemistry
|October 29, 2024
概括
这项研究探讨了Bi2Rh3(Se1-S)2,揭示了用硫替换如何影响压力下的超导和相变. 这些发现映射了这种新型物质系统中这些有序状态之间的相互作用.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
背景情况:
- 研究基于Bi的超导体Bi2Rh3(Se1-S)2,这种材料表现出明显的超导和相位过渡行为.
- Bi2Rh3Se2是一种超导体 (Tc<1.0 K),在240 K时具有电荷密度波 (CDW) 过渡.
- Bi2Rh3S2是一种非超导体,在165 K时具有第一阶结构相变.
研究的目的:
- 探索Bi2Rh3(Se1-S) 2的结构性和超导性特性,在一系列Se/S组合 (x = 0-1.0) 中进行研究.
- 研究压力对超导和相变 (CDW和结构) 的影响.
- 阐明超导和相互竞争的有序状态 (CDW和结构过渡) 之间的相互作用.
主要方法:
- 合成的Bi2Rh3(Se1-S)2固体溶液的组成不同.
- 对晶体结构和超导特性进行实验性研究.
- 应用广泛的压力范围来研究超导和相变的依赖性.
主要成果:
- 详细的Bi2Rh3(Se1-S) 2的相图作为组成 (x) 的函数.
- 对超导行为和相位过渡温度的压力诱导变化的观察.
- 超导和电荷密度波/结构相变之间的相互作用的识别.
结论:
- 在Bi2Rh3中用S替换Se1-S) 2显著调整其电子特性,包括超导和相变.
- 压力是控制超导和其他有序电子状态之间的竞争的关键参数.
- 这项研究提供了对新型材料系统中复杂电子相竞争的基本物理学的见解.
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