论文标题
超导体/铁磁超级晶格的巨型电磁接近效应
Giant electromagnetic proximity effect in superconductor/ferromagnet superlattices
论文作者
论文摘要
我们表明，在具有交替的超导（S）和铁磁（F）层的超晶格中，由于电磁近端效应而在超导层中引起的自发磁场与先前研究的S/Filayers相比变得显着增强。该效果揭示了磁矩的平面内向，以用于F层中矩的铁磁和抗铁磁有序。在有限的大小中，磁场从样品表面衰减到结构的大部分，并且衰减长度在很大程度上取决于样品表面的相对取向，层平面和F层中的磁矩。获得的结果提供了有关NB/GD超级晶格中中子散射的实验数据的更多见解。
We show that in superlattices with alternating superconducting (S) and ferromagnetic (F) layers the spontaneous magnetic field induced in the superconducting layers due to the electromagnetic proximity effect becomes dramatically enhanced compared to the previously studied S/F bilayers. The effect reveals itself for the in-plane orientation of the magnetic moments both for ferromagnetic and anti-ferromagnetic ordering of the moments in the F layers. In the finite size samples the magnetic field decays from the sample surface towards the bulk of the structure, and the decay length strongly depends on the relative orientation of the sample surface, the layers planes and magnetic moments in the F layers. The obtained results provide additional insights into experimental data on the neutron scattering in Nb/Gd superlattices.
