Acoustic spin transport by superconducting quasiparticles
Acoustic spin transport by superconducting quasiparticles
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DOI：
10.1103/physrevb.106.214420
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发表时间：
2022-12-19
影响因子：
3.7
通讯作者：
Matsuo，Mamoru
中科院分区：
文献类型：
--
作者：
Funato，Takumi;Yamakage，Ai;Matsuo，Mamoru
本文从理论上研究了超导体中声表面波（SAW）产生的自旋电流。我们用平均场哈密顿量来模拟非波超导体，并基于量子动力学理论计算了自旋涡旋耦合产生的自旋电流。结果表明，自旋电流可以驱动在一个单一的超导层，我们的估计表明，可检测的自旋电流的幅度可以产生在铝。我们的建议可能有助于从应用和基础物理方面推进超导体中的自旋输运。
We theoretically study the generation of spin current due to a surface acoustic wave (SAW) in a superconductor. We model an-wave superconductor as the mean-field Hamiltonian and calculate spin current generated via spin-vorticity coupling based on quantum kinetic theory. The results suggest that the spin current can be driven in a single-superconductor layer, and our estimation suggests that the detectable magnitude of the spin current can be generated in aluminum. Our proposal may contribute to the advancement of spin transport in superconductors from application and fundamental physics aspects.