Unconventional superconducting phases in multilayer films with layer-dependent Rashba spin-orbit interactions
Unconventional superconducting phases in multilayer films with layer-dependent Rashba spin-orbit interactions
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DOI：
10.1103/physrevb.101.184502
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发表时间：
2020-05-04
影响因子：
3.7
通讯作者：
Yanase, Youichi
中科院分区：
文献类型：
--
作者：
Masutomi, Ryuichi;Okamoto, Tohru;Yanase, Youichi
我们介绍了具有与层相关的Rashba自旋-轨道相互作用的双层和三层膜的电阻率测量。在平行上临界场的温度依赖关系中观察到急剧的上升。我们证明了它对应于从复杂条纹相到螺旋相的转变。此外，我们还提出了一个多层体系的相图，该相图是由实验观测得到的，并辅之以数值计算。这些结果为阐明由二维Rashba超导体组成的多层系统中的非平凡超导态奠定了基础。
We present resistivity measurements of bilayer and trilayer films with layer-dependent Rashba spin-orbit interactions. A sharp upturn is observed in the temperature dependence of the parallel upper critical field. We show that it corresponds to a transition from a complex-stripe phase to a helical phase. Moreover, we propose the phase diagram of a multilayer system, which is obtained from experimental observations with the support of numerical calculations. These results pave the way for the clarification of non-trivial superconducting states in multilayer systems composed of two-dimensional Rashba superconductors.