在混合旋转轨道合系统中,超导二极管效应的异常角度依赖
Chuan-Shuai Huang1, Weinan Lin1, Xiancong Lu1
1Department of Physics, Xiamen University, Xiamen 361005, People's Republic of China.
Journal of physics. Condensed matter : an Institute of Physics journal
|February 10, 2025
概括
我们发现,外部磁场的方向显著影响混合旋转轨道合 (SOC) 材料中的超导二极管效应 (SDE). 这种磁场方向性是控制螺旋超导和在新系统中实现SDE的关键.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 超导电性 超导电性 超导电性
- 这就是Spintronics.
背景情况:
- 具有强大的旋转轨道合 (SOC) 的非中心对称超导体可以表现出超导二极管效应 (SDE).
- 该SDE的特点是螺旋式超导,库珀对表现出净动量.
- 已知外部磁场会在某些超导系统中诱导SDE.
研究的目的:
- 为了研究具有Rashba和Dresselhaus SOCs的超导体中的内在SDE.
- 为了阐明磁场方向对非互惠螺旋超导性的影响.
- 了解磁场方向与库珀对动量异质性之间的关系.
主要方法:
- 用Rashba和Dresselhaus SOCs组合的超导体模型对SDE进行理论探索.
- 数字模拟分析库珀对动量的行为在不同的平面内磁场方向下.
- 调查由此产生的SDE的角度依赖.
主要成果:
- induced 场诱导的库珀对动量的大小显示出强烈的异构性与变化在平面内磁场方向.
- 这种动量异质性导致一个复杂的,取决于角度的SDE.
- 磁场的方向在观察到的非互惠性中起着至关重要的作用.
结论:
- 该研究强调了磁场方向在混合SOC超导体中控制SDE的关键作用.
- 这些发现为在Rashba和Dresselhaus SOCs结合的系统中实验实现SDE提供了途径.
- 这项研究提供了对控制螺旋超导和非相互传输的基本机制的见解.
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