Abrikosov vortex nucleation and its detrimental effect on superconducting spin pumping in Pt/Nb/Ni80Fe20/Nb/Pt proximity structures
File(s)
Accepted version
Author(s)
Type
Journal Article
Abstract
We report Abrikosov vortex nucleation in Pt/Nb/Ni80Fe20/Nb/Pt proximity-coupled structures under oblique ferromagnetic resonance that turns out to be detrimental to superconducting spin pumping. By measuring an out-of-plane field-angle θH dependence and comparing with Pt-absent control samples, we show that as θH increases, the degree of enhancement (suppression) of spin pumping efficiency in the superconducting state for the Pt-present (Pt-absent) sample diminishes and it reverts to the normal state value at θH=90∘. This can be explained in terms of a substantial out-of-plane component of the resonance field for the Ni80Fe20 layer (with in-plane magnetization anisotropy and high aspect ratio) that approaches the upper critical field of the Nb, turning a large fraction of the singlet superconductor volume into the normal state.
Date Issued
2019-04-04
Date Acceptance
2019-03-21
Citation
Physical Review B (Condensed Matter), 2019, 99
ISSN
0163-1829
Publisher
American Physical Society
Journal / Book Title
Physical Review B (Condensed Matter)
Volume
99
Copyright Statement
©2019 American Physical Society
Sponsor
The Leverhulme Trust
Engineering & Physical Science Research Council (E
Grant Number
RPG-2016-306
RG81276
Subjects
Science & Technology
Technology
Physical Sciences
Materials Science, Multidisciplinary
Physics, Applied
Physics, Condensed Matter
Materials Science
Physics
FERROMAGNETIC-RESONANCE
MAGNETIZATION
Publication Status
Published
Article Number
ARTN 144503