论文标题
Rashba超导体薄膜中的可调关键领域
Tunable critical field in Rashba superconductor thin-films
论文作者
论文摘要
II型超导体中的上临界场受到Pauli Promagnetic极限的限制。在具有强烈的Rashba自旋轨道耦合的超导体中，可以通过形成螺旋状态来克服此极限。在这里，我们定量研究具有Rashba旋转轨耦合的有限大小超导体的磁场温度相图。我们讨论有限尺寸和形状各向异性的效果。我们证明，临界场是通过固有参数（例如自旋轨道耦合强度和可调参数）（例如样品几何图形和施加的磁场方向）控制的。我们的研究开辟了新的途径，用于设计超导旋转阀。
The upper critical field in type II superconductors is limited by the Pauli paramagnetic limit. In superconductors with strong Rashba spin-orbit coupling this limit can be overcome by forming a helical state. Here we quantitatively study the magnetic field-temperature phase diagram of finite-size superconductors with Rashba spin-orbit coupling. We discuss the effect of finite size and shape anisotropy. We demonstrate that the critical field is controllable by intrinsic parameters such as spin-orbit coupling strength and tunable parameters such as sample geometry and applied field direction. Our study opens new avenues for the design of superconducting spin-valves.
