在U1-xThxTe2中的高磁场相
Camilla M Moir1, John Singleton2, Joanna Blawat2
1Department of Physics, University of California San Diego, La Jolla, CA 92093.
概括
在重费米离子超导体UTe2中的兴奋剂抑制了某些超导相 (SC1和SC2),同时在磁场中保留了其他相 (SCFP和FP). 引入的障碍影响了UTe2.2的超导相图.
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
- 超导电性 超导电性 超导电性
背景情况:
- 沉重费米离子超导体UTe2在低温下表现出复杂的超导相图.
- 这种相位图对磁场的方向和强度敏感,具有明显的超导相 (SC1,SC2,SCFP) 和场极化 (FP) 相.
研究的目的:
- 为了研究 (Th) 替代对UTe2.2.的磁场依赖超导相位图的影响.
- 了解如何增加混乱影响U(1-x) ThxTe2系统中的不同超导相.
主要方法:
- 实验研究的H对 θ相图为U(1-x) ThxTe2单晶在~0.6K.
- 度的系统变化 (x) 从0.005到0.047.
- 分析超导相极限和干扰的影响,用残电比 (RRR) 表示.
主要成果:
- 在较高的Th度 (x=0.047) 中,SC1阶段持续存在,但具有减少的临界场,而SC2则被抑制.
- SCFP和FP阶段在很大程度上不受影响,直到x=0.02.
- 在较高的Th度下 (x=0.025-0.047),SCFP和FP阶段被完全抑制,与疾病增加相关 (RRR ~3).
结论:
- 替代调整了UTe2的超导相图,抑制了SC2等特定相.
- 这项研究突出了不同超导相在无序状态下的独特行为,SCFP和FP相表现出适度无序的弹性,但最终的抑制.
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