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arXiv 1209.4356cond-mat.supr-con
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铁磁超导体中的自旋转移和交换力矩

Spin-Transfer and Exchange Torques in Ferromagnetic Superconductors

Jacob Linder, Arne Brataas, Zahra Shomali, Malek Zareyan

摘要:

我们考虑超导关联如何影响铁磁超导体中的自旋转移力矩。结果表明,存在一种新的粒子-空穴干涉力矩,它依赖于与超导序参量有关的U(1)相。我们还表明,有一个平衡的交换力矩之间的两个铁磁超导体接触通过正常的金属介导的Andreev状态。后者的平衡磁转矩也是敏感的自旋分辨的相位差的超导序参量,以及外部施加的相位差。

英文摘要:

We consider how superconducting correlations influence spin-transfer torques in ferromagnetic superconductors. It is demonstrated that there is a novel torque arising from particle-hole interference that depends on the U(1) phase associated with the superconducting order parameter. We also show that there is an equilibrium exchange torque between two ferromagnetic superconductors in contact via a normal metal mediated by Andreev states. The latter equilibrium magnetic torque is also sensitive to spin-resolved phase differences in the superconducting order parameters as well as to an externally applied phase difference.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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