Continuously tuneable critical current in superconductor-ferromagnet multilayers

Peter Curran; Jangyong Kim; Nathan Satchell; James Witt; Gavin Burnell; Machiel Geert Flokstra; Steve Lee; Simon Bending

doi:10.1063/1.4989693

Continuously tuneable critical current in superconductor-ferromagnet multilayers

Peter Curran, Jangyong Kim, Nathan Satchell, James Witt, Gavin Burnell, Machiel Geert Flokstra, Steve Lee, Simon Bending

Research output: Contribution to journal › Article › peer-review

7 Citations (SciVal)

191 Downloads (Pure)

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

Keywords

Superconductivity
Ferromagnetism
Multilayers
Critical Current

Access to Document

10.1063/1.4989693

pdf_archiveAPPLABvol_110iss_26262601_1_am
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Curran, P., Kim, J., Satchell, N., Witt, J., Burnell, G., Flokstra, M. G., ... Bending, S. (2017). Continuously tuneable critical current in superconductor-ferromagnet multilayers. Applied Physics Letters, 110, [262601] and may be found at http://dx.doi.org/10.1063/1.4989693
Accepted author manuscript, 758 KB

Cite this

@article{676c17a8f9be4d09848f97035e88dbcb,

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 vortexinteracts 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.",

keywords = "Superconductivity, Ferromagnetism, Multilayers, Critical Current",

author = "Peter Curran and Jangyong Kim and Nathan Satchell and James Witt and Gavin Burnell and Flokstra, {Machiel Geert} and Steve Lee and Simon Bending",

year = "2017",

month = jun,

day = "27",

doi = "10.1063/1.4989693",

language = "English",

volume = "110",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "AIP Publishing",

number = "26",

}

TY - JOUR

T1 - Continuously tuneable critical current in superconductor-ferromagnet multilayers

AU - Curran, Peter

AU - Kim, Jangyong

AU - Satchell, Nathan

AU - Witt, James

AU - Burnell, Gavin

AU - Flokstra, Machiel Geert

AU - Lee, Steve

AU - Bending, Simon

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 vortexinteracts 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 vortexinteracts 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.

KW - Superconductivity

KW - Ferromagnetism

KW - Multilayers

KW - Critical Current

UR - http://dx.doi.org/10.1063/1.4989693

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

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

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

Simon Bending

Dataset for "Continuously Tuneable Critical Current in Superconductor-Ferromagnet Multilayers"

Cite this

Continuously tuneable critical current in superconductor-ferromagnet multilayers

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Projects

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

Profiles

Simon Bending

Datasets

Dataset for "Continuously Tuneable Critical Current in Superconductor-Ferromagnet Multilayers"

Cite this