Toward the Absolute Spin-Valve Effect in Superconducting Tunnel Junctions,Nano Letters

当前位置： X-MOL 学术 › Nano Lett. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Toward the Absolute Spin-Valve Effect in Superconducting Tunnel Junctions
Nano Letters ( IF 9.6 ) Pub Date : 2018-09-24 00:00:00 , DOI: 10.1021/acs.nanolett.8b02723
Giorgio De Simoni ₁ , Elia Strambini ₁ , Jagadeesh S. Moodera ₂ , F. Sebastian Bergeret _{3,

4} , Francesco Giazotto ₁

Affiliation

A superconductor with a spin–split excitation spectrum behaves as an ideal ferromagnetic spin-injector in a tunneling junction. It was theoretically predicted that the combination of two such spin–split superconductors with independently tunable magnetizations may be used as an ideal absolute spin-valve. Here, we report on the first switchable superconducting spin-valve based on two EuS/Al bilayers coupled through an aluminum oxide tunnel barrier. The spin-valve shows a relative resistance change between the parallel and antiparallel configuration of the EuS layers up to 900% that demonstrates a highly spin-polarized current through the junction. Our device may be pivotal for realization of thermoelectric radiation detectors, a logical element for a memory cell in cryogenics, superconductor-based computers, and superconducting spintronics in general.

中文翻译：

走向超导隧道结的绝对自旋阀效应

具有自旋分裂激发光谱的超导体在隧道结中表现为理想的铁磁自旋注入器。从理论上预测，两个这样的自旋分裂超导体与独立可调磁化强度的组合可以用作理想的绝对自旋阀。在这里，我们报告基于两个通过氧化铝隧道势垒耦合的EuS / Al双层的第一可切换超导自旋阀。自旋阀显示EuS层的平行和反平行配置之间的相对电阻变化高达900％，这表明流过结的自旋极化电流很高。我们的设备对于实现热电辐射探测器，低温设备中存储单元的逻辑元件，基于超导体的计算机，

更新日期：2018-09-24

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11