Robustness of Spin-Triplet Pairing and Singlet–Triplet Pairing Crossover in Superconductor/Ferromagnet Hybrids
Robustness of Spin-Triplet Pairing and Singlet–Triplet Pairing Crossover in Superconductor/Ferromagnet Hybrids
复制标题
超导/铁磁体混合体中自旋三重态配对和单重态-三重态配对交叉的鲁棒性
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
A. Golubov
中科院分区：
文献类型：
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作者：
S. Kawabata;Y. Asano;Yukio Tanaka;A. Golubov
我们系统地研究了超导体/铁磁结中的邻近效应，讨论了局域态密度的零能峰(ZEP)与自旋三重态奇频配对的关系。通过精确求解非线性Usadel方程，我们发现在非共线磁化的情况下，ZEP可以在很宽的几何和材料参数范围内实现。这有力地表明了在这类系统中由自旋三重态奇频配对引起的零相关的稳健性。我们还发现，可以通过测量ZEP高度与F层厚度的关系来检测从单态配对到三重态配对的交叉。此外，我们还展示了如何通过LDOS测量来观察自旋三重态奇频配对和配对交叉的特征。我们的结果为实验检测奇频配对态的特征提供了一种直接的方法。
We have investigated the proximity effect in superconductor/ferromagnet junctions in a systematic manner to discuss the relationship between the zero-energy peak (ZEP) of the local density of states (LDOS) and spin-triplet odd-frequency pairing. By exactly solving the nonlinear Usadel equations, we have found that the ZEP is realized in a wide range of geometrical and material parameters in the case of the noncollinear magnetization. This strongly suggests the robustness of the ZEP induced by spin-triplet odd-frequency pairing in such systems. We also found that the crossover from singlet pairing to triplet pairing can be detected by measuring the F layer thickness dependence of the ZEP height. Furthermore, we show how to observe signatures of spin-triplet odd-frequency pairing and the pairing crossover by LDOS measurement. Our results provide a direct way to experimentally detect signatures of the odd-frequency pairing state.
铁磁涡旋中的三重态超导性。
影响因子：
8.6
作者：
Kalenkov MS
通讯作者：
Kalenkov MS