Intrinsic superspin Hall current
Intrinsic superspin Hall current
复制标题
本征超自旋霍尔电流
DOI：
10.1103/physrevb.96.094512
复制
发表时间：
2017
影响因子：
3.7
通讯作者：
V. Risinggaard
中科院分区：
文献类型：
--
作者：
J. Linder;Morten Amundsen;V. Risinggaard
我们发现了一种本征超自旋霍尔电流：在含有重正常金属和铁磁体的约瑟夫森结中注入电荷超电流产生横向自旋超电流。与传统的自旋霍尔效应相反，没有伴随的能量耗散。这种效应的物理根源是由于p波和常规s波超导关联共存，在超导体界面附近的横模k_y之间感应出反对称自旋密度，并存在一个相位失配。我们的预测可以在混合结构中进行测试，包括薄的重金属层与强铁磁体和普通的$s$波超导体相结合。
We discover an intrinsic superspin Hall current: an injected charge supercurrent in a Josephson junction containing heavy normal metals and a ferromagnet generates a transverse spin supercurrent. There is no accompanying dissipation of energy, in contrast to the conventional spin Hall effect. The physical origin of the effect is an antisymmetric spin density induced among transverse modes $k_y$ near the interface of the superconductor arising due to the coexistence of $p$-wave and conventional $s$-wave superconducting correlations with a belonging phase mismatch. Our predictions can be tested in hybrid structures including thin heavy metal layers combined with strong ferromagnets and ordinary $s$-wave superconductors.