Nonlocal injection of spin current into a superconducting Nb wire
Nonlocal injection of spin current into a superconducting Nb wire
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DOI：
10.1063/1.3427483
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发表时间：
2010-05-10
影响因子：
4
通讯作者：
Otani, Y.
中科院分区：
文献类型：
--
作者：
Ohnishi, K.;Kimura, T.;Otani, Y.
采用非局域自旋吸收技术，在多端横向结构中，实验证明了纯自旋电流注入到铌酸锶钡中。从自旋信号的减少，我们发现吸收效率几乎保持不变，即使在超导转变。Nb/Cu界面特性也进行了补充检查，通过使用Nb/Cu/Nb结纳入同一设备中，揭示超导性低于转变温度。这些实验结果支持纯自旋电流可以被吸收到一个Nb-Nb线几乎相同的效率在正常状态下。(C)2010年美国物理学会。[doi：10.1063/1.3427483]
Pure spin current injection into a superconductive Nb was demonstrated experimentally by employing a nonlocal spin absorption technique in a multiterminal lateral structure. From the reduction in spin signals, we found the absorption efficiency remained almost unchanged even after superconducting transition. The Nb/Cu interface properties were also complementarily examined by using a Nb/Cu/Nb junction incorporated in the same device, revealing superconductivity below the transition temperature. These experimental results support that the pure spin current can be absorbed into a superconductive Nb wire with almost the same efficiency as in a normal state. (C) 2010 American Institute of Physics. [doi:10.1063/1.3427483]