Remotely induced magnetism in a normal metal using a superconducting spin-valve

被引：0

作者：

Flokstra, M. G. ^{[1
]}

Satchell, N. ^{[2
]}

Kim, J. ^{[2
]}

Burnell, G. ^{[2
]}

Curran, P. J. ^{[3
]}

Bending, S. J. ^{[3
]}

Cooper, J. F. K. ^{[4
]}

Kinane, C. J. ^{[4
]}

Langridge, S. ^{[4
]}

Isidori, A. ^{[5
]}

Pugach, N. ^{[5
,6
]}

Eschrig, M. ^{[5
]}

Luetkens, H. ^{[7
]}

Suter, A. ^{[7
]}

Prokscha, T. ^{[7
]}

Lee, S. L. ^{[1
]}

机构：

[1] Univ St Andrews, SUPA, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland

[2] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England

[3] Univ Bath, Dept Phys, Bath BA2 7AY, Avon, England

[4] Rutherford Appleton Lab, ISIS, Didcot OX11 0QX, Oxon, England

[5] Univ London Egham, Dept Phys, SEPnet & Hubbard Theory Consortium, Surrey TW20 0EX, England

[6] Lomonosov Moscow State Univ SYNP MSU, Skobeltsyn Inst Nucl Phys, Moscow 119991, Russia

[7] Paul Scherrer Inst, Labor Myonspinspektroskopie, CH-5232 Villigen, Switzerland

来源：

NATURE PHYSICS | 2016年 / 12卷 / 01期

基金：

英国工程与自然科学研究理事会;

关键词：

FERROMAGNET; SUPERCURRENTS; GENERATION;

D O I：

10.1038/NPHYS3486

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Superconducting spintronics has emerged in the past decade as a promising new field that seeks to open a new dimension for nanoelectronics by utilizing the internal spin structure of the superconducting Cooper pair as a new degree of freedom(1,2). Its basic building blocks are spin-triplet Cooper pairs with equally aligned spins, which are promoted by proximity of a conventional superconductor to a ferromagnetic material with inhomogeneous macroscopic magnetization(3). Using low-energy muon spin-rotation experiments we find an unanticipated effect, in contradiction with the existing theoretical models of superconductivity and ferromagnetism: the appearance of a magnetization in a thin layer of a non-magnetic metal (gold), separated from a ferromagnetic double layer by a 50-nm-thick superconducting layer of Nb. The effect can be controlled either by temperature or by using a magnetic field to control the state of the remote ferromagnetic elements, and may act as a basic building block for a new generation of quantum interference devices based on the spin of a Cooper pair.

引用

页码：57 / U87

页数：6