在非传统金属NiTe2基约瑟夫森连接处的边界超电流的磁场过
Tian Le1, Ruihan Zhang1,2, Changcun Li3
1Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, China.
Nature communications
|March 30, 2024
概括
研究人员观察到 Telluride (NiTe2) 约瑟夫森连接处的边界超流. 一个在平面内的磁场过了大量超电流,突出显示了NiTe2.2中非传统的阻塞链状态.
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
背景情况:
- 具有边界状态的拓材料,包括非常规 (阻塞原子) 材料,正在获得研究兴趣.
- 这些材料上的约瑟夫森结 (JJs) 显示出边界超电流,这对诊断很有用.
研究的目的:
- 为了研究 Telluride (NiTe2) 中的边界超电流.
- 为了证明NiTe2.2中的非常规性质和受阻链状态.
- 建立平面内磁场作为过大量超流和突出边界现象的方法.
主要方法:
- 基于NiTe2的约瑟夫森连接点的制造和特征.
- 在Josephson连接处应用平面内磁场.
- 进行比较分析和理论计算.
主要成果:
- 在基于NiTe2的JJ中观察边界超电流.
- 使用平面内磁场 (磁场过) 快速抑制大量超电流并保留边界超电流.
- 证据表明,NiTe2中的非传统性质和受阻链状态是导致观察到的链超电流的原因.
结论:
- 尼二呈现可能的链状态,这是非常规材料的特征.
- 平面内磁场是过大量贡献的有效工具,可以隔离和突出拓学和非常规材料中隐藏的链状态.
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