Stewart, R, Flokstra, MG, Rogers, M et al. (8 more authors) (Cover date: 1 July 2019) Controlling the electromagnetic proximity effect by tuning the mixing between superconducting and ferromagnetic order. Physical Review B - Condensed Matter and Materials Physics, 100 (2). 020505(R). ISSN 1098-0121
Abstract
We present low-energy muon-spin rotation measurements on Cu/Nb/AlOx/Co thin films that probe the newly described electromagnetic (EM) proximity effect. By varying the thickness of the insulating AlOx layer we control the degree of coupling between the superconductor and ferromagnet and thus the EM proximity effect. For barrier thicknesses up to 4 nm we find both a small contact-dependent reduction in the standard Meissner effect and a larger diamagnetic contribution originating at the Nb/AlOx/Co interface which decays away over a lengthscale far exceeding the superconducting coherence length. This second component we attribute to the EM proximity effect. Our analysis provides compelling experimental evidence for previously neglected electromagnetic effects within proximity coupled systems.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019, American Physical Society. Reproduced in accordance with the publisher's self-archiving policy. |
Keywords: | Proximity effect; Off-frequency triplet superconductivity; superconductivity; magnetism; scondensed matter physics |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Condensed Matter (Leeds) |
Funding Information: | Funder Grant number EPSRC EP/G005176/1 EU - European Union 743791 |
Depositing User: | Symplectic Publications |
Date Deposited: | 19 Jul 2019 11:02 |
Last Modified: | 25 Jun 2023 21:54 |
Status: | Published |
Publisher: | American Physical Society |
Identification Number: | 10.1103/PhysRevB.100.020505 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:148702 |