在几层6R-TaS2中隐藏磁性的Nematic Ising超导性
Shao-Bo Liu1, Congkuan Tian1,2, Yuqiang Fang3
1International Center for Quantum Materials, School of Physics, Peking University, Beijing, China.
Nature communications
|August 31, 2024
概括
研究人员在6R-TaS2范德瓦尔斯异构结构中发现了隐藏的磁力和伊辛超导. 这揭示了由合电子相互作用和层间合引起的异国情调量子状态.
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
- 量子材料 量子材料是一种量子材料.
背景情况:
- 范德瓦尔斯异构结构 (vdWHs) 通过层间合实现可定制的量子系统.
- 基于TaS2的vdWH表现出各种量子状态,包括量子自旋液体和超导体.
- 了解自然VDWH中的新兴现象对于新型量子技术至关重要.
研究的目的:
- 为了研究6R-TaS2.2中对称性破坏,隐性磁力和超导性的交织物理.
- 在6R-TaS2.2.中描述30K以下的新兴阶段.
- 探讨阴性,孔多选和伊辛超导的共存.
主要方法:
- 对自然范德瓦尔斯异构6R-TaS2.2的实验性研究.
- 在特征温度 (T* ≈ 30 K) 以下的电子和磁性质的表征.
- 分析现象,包括异常的霍尔效应,Kondo选和磁电阻.
主要成果:
- 在30K以下的6R-TaS2中出现了一个明显的阶段,具有巨大的外部异常霍尔效应 (AHE).
- 观察到Kondo选,磁场可调节的热歇斯底里和阴性磁电阻.
- 有证据表明隐藏的磁力与低温下Ising超导和内马性共存.
结论:
- 该研究揭示了自然vdWHs中合的流动和局部/相关的电子的意想不到的新兴物理.
- 在6R-TaS2中的层间相互作用驱动自发的旋转对称性破坏,隐藏的磁性和Ising超导.
- 这项工作突出了vdWHs通过操纵层间合来设计异国情调的量子状态的潜力.
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