A ferromagnetic insulator (FI) attached to a conventional superconductor (S) changes drastically the properties of the latter. Specifically, the exchange field at the FI/S interface leads to a splitting of the superconducting density of states. If S is a superconducting film, thinner than the superconducting coherence length, the modification of the density of states occurs over the whole sample. The co-existence of the exchange splitting and superconducting correlations in S/FI structures leads to striking transport phenomena that are of interest for applications in thermoelectricity, superconducting spintronics and radiation sensors. Here we review the most recent progress in understanding the transport properties of FI/S structures by presenting a complete theoretical framework based on the quasiclassical kinetic equations. We discuss the coupling between the electronic degrees of freedom, charge, spin and energy, under non-equilibrium conditions and its manifestation in thermoelectricity and spin-dependent transport.

中文翻译：

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超导体/铁磁绝缘体结构中的热、电和自旋输运

连接到传统超导体 (S) 的铁磁绝缘体 (FI) 会极大地改变后者的特性。具体而言，FI/S 界面处的交换场导致超导态密度分裂。如果 S 是超导薄膜，比超导相干长度更薄，则整个样品都会发生态密度的改变。S/FI 结构中交换分裂和超导相关性的共存导致了引人注目的传输现象，这些现象对热电、超导自旋电子学和辐射传感器的应用很感兴趣。在这里，我们通过提出基于准经典动力学方程的完整理论框架，回顾了理解 FI/S 结构输运性质的最新进展。