Measurement of the spatial extent of inverse proximity in a Py/Nb/Py superconducting trilayer using low-energy muon-spin rotation

M. G. Flokstra; S. J. Ray; S. J. Lister; J. Aarts; H. Luetkens; T. Prokscha; A. Suter; E. Morenzoni; S. L. Lee

doi:10.1103/PhysRevB.89.054510

Measurement of the spatial extent of inverse proximity in a Py/Nb/Py superconducting trilayer using low-energy muon-spin rotation

M. G. Flokstra^*, S. J. Ray, S. J. Lister, J. Aarts, H. Luetkens, T. Prokscha, A. Suter, E. Morenzoni, S. L. Lee

^*Corresponding author for this work

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

Abstract

Muon-spin rotation has been used to observe directly the spatial variation of the magnetic flux density near the ferromagnetic-superconducting interface in a permalloy-niobium trilayer. Above the superconducting transition temperature T_c the profile of the induced magnetic flux density within the niobium layer has been determined. Below T_c there is a significant reduction of the induced flux density, predominantly near the ferromagnetic-superconducting interfaces. We are uniquely able to determine the magnitude and spatial variation of this reduction in induced magnetization due to the presence of the Cooper pairs, yielding the magnitude and length scale associated with this phenomenon. Both are inconsistent with a simple Meissner screening and indicate the existence of another mechanism, the influence of which is localized within the vicinity of the ferromagnetic interface.

Original language	English
Article number	054510
Number of pages	5
Journal	Physical Review. B, Condensed matter and materials physics
Volume	89
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevB.89.054510
Publication status	Published - 19 Feb 2014

Keywords

Ferromagnet

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10.1103/PhysRevB.89.054510

Lee_2014_PRB_Measurement
© 2014 American Physical Society
Final published version, 388 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

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Flokstra, M. G., Ray, S. J., Lister, S. J., Aarts, J., Luetkens, H., Prokscha, T., Suter, A., Morenzoni, E., & Lee, S. L. (2014). Measurement of the spatial extent of inverse proximity in a Py/Nb/Py superconducting trilayer using low-energy muon-spin rotation. Physical Review. B, Condensed matter and materials physics, 89(5), Article 054510. https://doi.org/10.1103/PhysRevB.89.054510

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title = "Measurement of the spatial extent of inverse proximity in a Py/Nb/Py superconducting trilayer using low-energy muon-spin rotation",

abstract = "Muon-spin rotation has been used to observe directly the spatial variation of the magnetic flux density near the ferromagnetic-superconducting interface in a permalloy-niobium trilayer. Above the superconducting transition temperature Tc the profile of the induced magnetic flux density within the niobium layer has been determined. Below Tc there is a significant reduction of the induced flux density, predominantly near the ferromagnetic-superconducting interfaces. We are uniquely able to determine the magnitude and spatial variation of this reduction in induced magnetization due to the presence of the Cooper pairs, yielding the magnitude and length scale associated with this phenomenon. Both are inconsistent with a simple Meissner screening and indicate the existence of another mechanism, the influence of which is localized within the vicinity of the ferromagnetic interface.",

keywords = "Ferromagnet",

author = "Flokstra, {M. G.} and Ray, {S. J.} and Lister, {S. J.} and J. Aarts and H. Luetkens and T. Prokscha and A. Suter and E. Morenzoni and Lee, {S. L.}",

note = "The authors acknowledge the financial support of the EPSRC (Grant No. EP/J01060X).",

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doi = "10.1103/PhysRevB.89.054510",

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AU - Flokstra, M. G.

AU - Ray, S. J.

AU - Lister, S. J.

AU - Aarts, J.

AU - Luetkens, H.

AU - Prokscha, T.

AU - Suter, A.

AU - Morenzoni, E.

AU - Lee, S. L.

N1 - The authors acknowledge the financial support of the EPSRC (Grant No. EP/J01060X).

PY - 2014/2/19

Y1 - 2014/2/19

N2 - Muon-spin rotation has been used to observe directly the spatial variation of the magnetic flux density near the ferromagnetic-superconducting interface in a permalloy-niobium trilayer. Above the superconducting transition temperature Tc the profile of the induced magnetic flux density within the niobium layer has been determined. Below Tc there is a significant reduction of the induced flux density, predominantly near the ferromagnetic-superconducting interfaces. We are uniquely able to determine the magnitude and spatial variation of this reduction in induced magnetization due to the presence of the Cooper pairs, yielding the magnitude and length scale associated with this phenomenon. Both are inconsistent with a simple Meissner screening and indicate the existence of another mechanism, the influence of which is localized within the vicinity of the ferromagnetic interface.

AB - Muon-spin rotation has been used to observe directly the spatial variation of the magnetic flux density near the ferromagnetic-superconducting interface in a permalloy-niobium trilayer. Above the superconducting transition temperature Tc the profile of the induced magnetic flux density within the niobium layer has been determined. Below Tc there is a significant reduction of the induced flux density, predominantly near the ferromagnetic-superconducting interfaces. We are uniquely able to determine the magnitude and spatial variation of this reduction in induced magnetization due to the presence of the Cooper pairs, yielding the magnitude and length scale associated with this phenomenon. Both are inconsistent with a simple Meissner screening and indicate the existence of another mechanism, the influence of which is localized within the vicinity of the ferromagnetic interface.

KW - Ferromagnet

U2 - 10.1103/PhysRevB.89.054510

DO - 10.1103/PhysRevB.89.054510

M3 - Article

SN - 1098-0121

VL - 89

JO - Physical Review. B, Condensed matter and materials physics

JF - Physical Review. B, Condensed matter and materials physics

IS - 5

M1 - 054510

ER -

Measurement of the spatial extent of inverse proximity in a Py/Nb/Py superconducting trilayer using low-energy muon-spin rotation

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Keywords

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Projects

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

Cite this