论文标题
在铁磁绝缘子 - 驱动器接口上依赖场依赖性自旋分裂的实验和理论研究
Experimental and theoretical study of field-dependent spin splitting at ferromagnetic-insulator-superconductor interfaces
论文作者
论文摘要
我们提出了一项合并的实验和理论工作，该工作研究了铁磁性绝缘体 - 超导体（FI-S）界面的磁接近效应。该仿真基于扩散的准经典绿色函数的边界条件，该功能是任意强的自旋依赖性效应和旋转角度的。将EUS-AL异质结构的差异电导与理论计算进行了比较。假设取决于外部应用场的均匀自旋角，我们发现理论和实验之间的一致性很好。该理论仅取决于极少数参数，主要由实验设置指定。我们确定接口矩的有效旋转为$ j \ of 0.74 \ hbar $。
We present a combined experimental and theoretical work that investigates the magnetic proximity effect at a ferromagnetic-insulator - superconductor (FI-S) interface. The simulation is based on the boundary condition for diffusive quasiclassical Greens functions, that accounts for arbitrarily strong spin-dependent effects and spin-mixing angles. The experimentally found differential conductance of an EuS-Al heterostructure is compared with a theoretical calculation. With the assumption of a uniform spin-mixing angle that depends on the externally applied field, we find good agreement between theory and experiment. The theory depends only on very few parameters, mostly specified by the experimental setup. We determine the effective spin of the interface moments as $ J\approx 0.74\hbar $.
