Injection of spin-polarized carriers in ferromagnet/superconductor tunnel junctions

Injection of spin-polarized carriers in ferromagnet/superconductor tunnel junctions
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在铁磁体/超导体隧道结中注入自旋极化载流子

DOI:
10.1088/0953-8984/13/4/309
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发表时间:
2001
期刊:
Journal of Physics: Condensed Matter
影响因子:
--
通讯作者:
Zhenghan Wang
Zhenghan Wang
中科院分区:
--
文献类型:
--
作者:
Guoya Sun;Z. Zheng;D. Xing;J. Dong;Zhenghan Wang

文献摘要

被引文献

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我们应用量子力学方法研究了超导体(SC)中由于铁磁体(FM)注入自旋极化载流子通过FM/SC隧道结而产生的临界电流抑制。研究发现,在一定的偏置电压下,超导性的抑制与注入电流的极化、SC中的自旋扩散长度以及FM/SC界面的绝缘势垒强度密切相关。
We apply a quantum-mechanical approach to study critical current suppression in a superconductor (SC) due to injection of spin-polarized carriers from a ferromagnet (FM) through a FM/SC tunnel junction. It is found that for a given bias voltage, the superconductivity suppression depends strongly on the polarization of the injection current, on the spin-diffusion length in the SC, and on the insulating barrier strength at the FM/SC interface.