Proximity effect in a superconductor/exchange-spring-magnet hybrid system
J. Y. Gu, Jefery Kusnadi, Chun-Yeol You
DOI 10.1103/PhysRevB.81.214435 · Physical Review B
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Abstract
We investigate the proximity effect in a superconductor/ferromagnet (S/F) hybrid system with a noncollinear magnetic configuration. A new structure of an S/exchange-spring (ES) magnet is fabricated, where an ES magnet is employed as an F layer since the magnetization configuration is varied from a collinear state to a noncollinear state by a rotating external magnetic field in a well controllable way. We found that the resistance decreases and the superconducting transition temperature increases, as noncollinearity is introduced starting from a collinear state. We interpret that our experimental observation is due to the contribution of the odd-triplet superconducting condensate that survived in a noncollinear magnetization configuration in the ES magnet.
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. | 3.23 | Pressure not reported | midpoint |
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