Jeon, K-R;
Ciccarelli, C;
Kurebayashi, H;
Cohen, LF;
Komori, S;
Robinson, JWA;
Blamire, MG;
(2019)
Abrikosov vortex nucleation and its detrimental effect on superconducting spin pumping in Pt/Nb/Ni80Fe20/Nb/Pt proximity structures.
Physical Review B
, 99
, Article 144503. 10.1103/PhysRevB.99.144503.
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Abstract
We report Abrikosov vortex nucleation in Pt / Nb / Ni 80 Fe 20 / 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 θ H dependence and comparing with Pt-absent control samples, we show that as θ H 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 θ H = 90 ∘ . This can be explained in terms of a substantial out-of-plane component of the resonance field for the Ni 80 Fe 20 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.
| Type: | Article |
|---|---|
| Title: | Abrikosov vortex nucleation and its detrimental effect on superconducting spin pumping in Pt/Nb/Ni80Fe20/Nb/Pt proximity structures |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevB.99.144503 |
| Publisher version: | https://doi.org/10.1103/PhysRevB.99.144503 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Technology, Physical Sciences, Materials Science, Multidisciplinary, Physics, Applied, Physics, Condensed Matter, Materials Science, Physics, FERROMAGNETIC-RESONANCE, MAGNETIZATION |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10072932 |
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