Controlling the electromagnetic proximity effect by tuning the mixing between superconducting and ferromagnetic order
R. Stewart, M. G. Flokstra, M. Rogers, N. Satchell, G. Burnell, D. Miller, H. Luetkens, T. Prokscha, A. Suter, E. Morenzoni, S. L. Lee
DOI 10.1103/PhysRevB.100.020505 · 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
We present low-energy muon-spin rotation measurements on Cu/Nb/AlOx/Co thin films that probe the newly described electromagnetic (EM) proximity effect. By varying the thickness of the insulating AlOx layer we control the degree of coupling between the superconductor and ferromagnet and thus the EM proximity effect. For barrier thicknesses up to 4 nm we find both a small contact-dependent reduction in the standard Meissner effect and a larger diamagnetic contribution originating at the Nb/AlOx/Co interface which decays away over a lengthscale far exceeding the superconducting coherence length. This second component we attribute to the EM proximity effect. Our analysis provides compelling experimental evidence for previously neglected electromagnetic effects within proximity coupled systems.
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
Meissner screening as a probe for inverse superconductor-ferromagnet proximity effects
similarity 0.93M. G. Flokstra et al.
Source status unknown — claims are unverified
Phase sensitive electron-phonon coupling in a superconducting proximity structure
similarity 0.91T. T. Heikkilä & Francesco Giazotto
Source status unknown — claims are unverified
Controlling Josephson dynamics by strong microwave fields
similarity 0.90B. Chesca et al.
Source status unknown — claims are unverified
Superconducting proximity effect in a mesoscopic ferromagnetic wire
similarity 0.90M. Giroud et al.
Source status unknown — claims are unverified
Realizing a Circuit Analog of an Optomechanical System with Longitudinally Coupled Superconducting Resonators
similarity 0.90C. Eichler & J. R. Petta
Source status unknown — claims are unverified
Microwave microscope studies of trapped vortex dynamics in superconductors
similarity 0.90Chung-Yang Wang & Steven M. Anlage
Source status unknown — claims are unverified