Continuously tuneable critical current in superconductor-ferromagnet multilayers

P. J.  Curran; J. Kim; N. Satchell; J. D. S.  Witt; G.  Burnell; Machiel Geert Flokstra; Stephen Leslie Lee; S. J.  Bending

doi:10.1063/1.4989693

Continuously tuneable critical current in superconductor-ferromagnet multilayers

P. J. Curran, J. Kim, N. Satchell, J. D. S. Witt, G. Burnell, Machiel Geert Flokstra, Stephen Leslie Lee, S. J. Bending

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Abstract

We demonstrate that the critical current of superconducting Nb/Ni multilayers can be continuously tuned by up to a factor of three during magnetization reversal of the Ni films under an applied in-plane magnetic field. Our observations are in reasonably good agreement with a model of vortex pinning by Bloch domain walls that proliferate in the samples during magnetization reversal, whereby each vortex interacts with at most one wall in any of the Ni layers. Our model suggests ways in which the controllable pinning effect could be significantly enhanced, with important potential applications in tuneable superconducting devices.

Original language	English
Article number	262601
Number of pages	5
Journal	Applied Physics Letters
Volume	110
Issue number	26
DOIs	https://doi.org/10.1063/1.4989693
Publication status	Published - 27 Jun 2017

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10.1063/1.4989693

Curran-2017-Continuously-tuneable-APL-AAM
© 2017, AIP Publishing. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at aip.scitation.org / http://doi.org/10.1063/1.4989693
Accepted author manuscript, 463 KB

Generation: Generation Imaging and Control of Novel Coherent Electronic States in Artificial Ferromagnetic-Superconducting Hybrid Metamaterials and Devices
Lee, S. (PI)
EPSRC
1/03/12 → 31/10/16
Project: Standard
Topological Protection and NonEquilibriu: Topological Protection and NonEquilibrium States in Strongly Correlated Electron Systems
Wahl, P. (PI), Baumberger, F. (CoI), Davis, J. C. (CoI), Green, A. (CoI), Hooley, C. (CoI), Keeling, J. M. J. (CoI) & Mackenzie, A. (CoI)
EPSRC
1/09/11 → 31/08/17
Project: Standard

Continuously tuneable critical current in superconductor-ferromagnet multilayers (dataset)
Curran, P. J. (Creator), Kim, J. (Creator), Satchell, N. (Creator), Witt, J. D. S. (Creator), Burnell, G. (Creator), Flokstra, M. G. (Creator), Lee, S. L. (Creator) & Bending, S. J. (Creator), University of Bath, 2017
DOI: 10.15125/BATH-00386
Dataset

Cite this

@article{0ce6ce7ad2c344d79caed4c15ce83808,

title = "Continuously tuneable critical current in superconductor-ferromagnet multilayers",

abstract = "We demonstrate that the critical current of superconducting Nb/Ni multilayers can be continuously tuned by up to a factor of three during magnetization reversal of the Ni films under an applied in-plane magnetic field. Our observations are in reasonably good agreement with a model of vortex pinning by Bloch domain walls that proliferate in the samples during magnetization reversal, whereby each vortex interacts with at most one wall in any of the Ni layers. Our model suggests ways in which the controllable pinning effect could be significantly enhanced, with important potential applications in tuneable superconducting devices.",

author = "Curran, {P. J.} and J. Kim and N. Satchell and Witt, {J. D. S.} and G. Burnell and Flokstra, {Machiel Geert} and Lee, {Stephen Leslie} and Bending, {S. J.}",

note = "The authors acknowledge financial support from EPSRC, UK, under Grant Nos. EP/G036101/1, EP/J010626/1, EP/J010634/1, EP/J01060X/1, and EP/I031014/1; the NanoSC COST Action MP-1201; a JEOL Europe studentship under Grant No. EP/I000933/1, plus support from the STFC ISIS neutron and muon source.",

year = "2017",

month = jun,

day = "27",

doi = "10.1063/1.4989693",

language = "English",

volume = "110",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

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TY - JOUR

T1 - Continuously tuneable critical current in superconductor-ferromagnet multilayers

AU - Curran, P. J.

AU - Kim, J.

AU - Satchell, N.

AU - Witt, J. D. S.

AU - Burnell, G.

AU - Flokstra, Machiel Geert

AU - Lee, Stephen Leslie

AU - Bending, S. J.

N1 - The authors acknowledge financial support from EPSRC, UK, under Grant Nos. EP/G036101/1, EP/J010626/1, EP/J010634/1, EP/J01060X/1, and EP/I031014/1; the NanoSC COST Action MP-1201; a JEOL Europe studentship under Grant No. EP/I000933/1, plus support from the STFC ISIS neutron and muon source.

PY - 2017/6/27

Y1 - 2017/6/27

N2 - We demonstrate that the critical current of superconducting Nb/Ni multilayers can be continuously tuned by up to a factor of three during magnetization reversal of the Ni films under an applied in-plane magnetic field. Our observations are in reasonably good agreement with a model of vortex pinning by Bloch domain walls that proliferate in the samples during magnetization reversal, whereby each vortex interacts with at most one wall in any of the Ni layers. Our model suggests ways in which the controllable pinning effect could be significantly enhanced, with important potential applications in tuneable superconducting devices.

AB - We demonstrate that the critical current of superconducting Nb/Ni multilayers can be continuously tuned by up to a factor of three during magnetization reversal of the Ni films under an applied in-plane magnetic field. Our observations are in reasonably good agreement with a model of vortex pinning by Bloch domain walls that proliferate in the samples during magnetization reversal, whereby each vortex interacts with at most one wall in any of the Ni layers. Our model suggests ways in which the controllable pinning effect could be significantly enhanced, with important potential applications in tuneable superconducting devices.

U2 - 10.1063/1.4989693

DO - 10.1063/1.4989693

M3 - Article

SN - 0003-6951

VL - 110

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 26

M1 - 262601

ER -

Continuously tuneable critical current in superconductor-ferromagnet multilayers

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Projects

Generation: Generation Imaging and Control of Novel Coherent Electronic States in Artificial Ferromagnetic-Superconducting Hybrid Metamaterials and Devices

Topological Protection and NonEquilibriu: Topological Protection and NonEquilibrium States in Strongly Correlated Electron Systems

Datasets

Continuously tuneable critical current in superconductor-ferromagnet multilayers (dataset)

Cite this