Tunable critical field in Rashba superconductor thin films
Tunable critical field in Rashba superconductor thin films
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DOI：
10.1103/physrevb.103.l020504
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发表时间：
2020-09
影响因子：
3.7
通讯作者：
L. A. B. Olde Olthof;J. R. Weggemans;G. Kimbell;J. Robinson;X. Montiel
中科院分区：
文献类型：
--
作者：
L. A. B. Olde Olthof;J. R. Weggemans;G. Kimbell;J. Robinson;X. Montiel
强的本征或界面自旋轨道耦合（SOC）可以使薄膜超导体超越顺磁极限。对于 Rashba 型 SOC，我们表明，由于边缘态的产生，有限尺寸薄膜的超导热力学性质强烈依赖于样本尺寸；例如，在几何各向异性薄膜的情况下，发现临界场可通过外部施加的面内磁场的方向进行调节。这些发现为超导自旋轨道电子器件的发展开辟了前景。
Strong intrinsic or interfacial spin-orbit coupling (SOC) can enable a thin-film superconductor to exceed the paramagnetic limit. For Rashba-type SOC, we show that the superconducting thermodynamic properties of a finite-size thin film are strongly sample-size dependent due to the creation of edge states; for example, in the case of geometrically anisotropic thin films, the critical field is found to be tunable through the direction of an externally applied in-plane magnetic field. These findings open perspectives for the development of superconducting spin-orbitronic devices.