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

M. G. Flokstra; N. Satchell; J. Kim; G. Burnell; P. J. Curran; S. J. Bending; J. F K Cooper; C. J. Kinane; S. Langridge; A. Isidori; N. Pugach; M. Eschrig; H. Luetkens; A. Suter; T. Prokscha; S. L. Lee

doi:10.1038/nphys3486

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

M. G. Flokstra, N. Satchell, J. Kim, G. Burnell, P. J. Curran, S. J. Bending, J. F K Cooper, C. J. Kinane, S. Langridge, A. Isidori, N. Pugach, M. Eschrig, H. Luetkens, A. Suter, T. Prokscha, S. L. Lee

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Abstract

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. 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. 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.

Original language	English
Pages (from-to)	57-61
Number of pages	5
Journal	Nature Physics
Volume	12
Issue number	1
Early online date	5 Oct 2015
DOIs	https://doi.org/10.1038/nphys3486
Publication status	Published - 7 Jan 2016

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This is a post-peer-review, pre-copyedit version of an article published in Nature Physics. The final authenticated version is available online at: https://doi.org/10.1038/nphys3486
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https://arxiv.org/abs/1505.03565

SFM Consortium: Generation, Imaging and Control of Novel Coherent Electronic States
Bending, S. (PI)
Engineering and Physical Sciences Research Council
29/03/12 → 28/09/16
Project: Research council
Current - Driven Domain Wall Motion in Artificial Magnetic Domain Structures
Bending, S. (PI) & Crampin, S. (CoI)
Engineering and Physical Sciences Research Council
1/05/09 → 31/01/13
Project: Research council

Simon Bending
- S.Bendingbath.acuk
Person: Research & Teaching, Core staff, Affiliate staff

Data underpinning: Remotely induced magnetism in a normal metal using a superconducting spin-valve
Flokstra, M. G. (Creator), Satchell, N. (Creator), Kim, J. (Creator), Burnell, G. (Creator), Curran, P. (Creator), Bending, S. (Creator), Cooper, J. F. K. (Creator), Kinane, C. J. (Creator), Langridge, S. (Creator), Isidori, A. (Creator), Pugach, N. (Creator), Eschrig, M. (Creator), Luetkens, H. (Creator), Suter, A. (Creator), Prokscha, T. (Creator) & Lee, S. L. (Creator), University of St Andrews, 2015
DOI: 10.17630/DCCB7CB1-415F-4148-B05F-F34A42E6FF25
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Cite this

Flokstra, M. G., Satchell, N., Kim, J., Burnell, G., Curran, P. J., Bending, S. J., Cooper, J. F. K., Kinane, C. J., Langridge, S., Isidori, A., Pugach, N., Eschrig, M., Luetkens, H., Suter, A., Prokscha, T., & Lee, S. L. (2016). Remotely induced magnetism in a normal metal using a superconducting spin-valve. Nature Physics, 12(1), 57-61. https://doi.org/10.1038/nphys3486

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title = "Remotely induced magnetism in a normal metal using a superconducting spin-valve",

abstract = "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. 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. 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.",

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AU - Bending, S. J.

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AU - Kinane, C. J.

AU - Langridge, S.

AU - Isidori, A.

AU - Pugach, N.

AU - Eschrig, M.

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AU - Prokscha, T.

AU - Lee, S. L.

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

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SFM Consortium: Generation, Imaging and Control of Novel Coherent Electronic States

Current - Driven Domain Wall Motion in Artificial Magnetic Domain Structures

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Simon Bending

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

Cite this