Exchange-field enhancement of superconducting spin pumping
Kun-Rok Jeon, Chiara Ciccarelli, Hidekazu Kurebayashi, Lesley F. Cohen, Xavier Montiel, Matthias Eschrig, Sachio Komori, Jason W. A. Robinson, Mark G. Blamire
DOI 10.1103/PhysRevB.99.024507 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
A recent ferromagnetic resonance study [Jeon et al., Nat. Mater. 17, 499 (2018)] has reported that spin pumping into a singlet superconductor (Nb) can be greatly enhanced over the normal state when the Nb is coupled to a large spin-orbit-coupling (SOC) spin sink such as Pt. This behavior has been explained in terms of the generation of spin-polarized triplet supercurrents via SOC at the Nb/Pt interface, acting in conjunction with a nonlocally induced magnetic exchange field. Here we report the effect of adding a ferromagnet (Fe) to act as an internal source of an additional exchange field to the adjacent Pt spin sink. This dramatically enhances the spin pumping efficiency in the superconducting state compared with either Pt and Fe separately, demonstrating the critical role of the exchange field in generating superconducting spin currents in the Nb.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Properties of superconducting planar resonators at millikelvin temperatures
similarity 0.94T. Lindström et al.
Source status unknown — claims are unverified
Carrier transport in mesoscopic silicon-coupled superconducting junctions
similarity 0.94W. M. van Huffelen et al.
Source status unknown — claims are unverified
Enhanced Supercurrents in Josephson Junctions Containing Nonparallel Ferromagnetic Domains
similarity 0.94J. W. A. Robinson et al.
Source status unknown — claims are unverified
Giant enhancement to spin battery effect in superconductor/ferromagnetic insulator systems
similarity 0.93Risto Ojajärvi et al.
Source status unknown — claims are unverified
Supercurrent in ferromagnetic Josephson junctions with heavy metal interlayers
similarity 0.93Nathan Satchell & Norman O. Birge
Source status unknown — claims are unverified
Dynamical gate-tunable supercurrents in topological Josephson junctions
similarity 0.93C. Kurter et al.
Source status unknown — claims are unverified