We present wideband microwave measurements (1–22 GHz) taken on. superconductor/ferromagnet heterostructures with the Corbino disc technique. We apply the. technique to Nb\/PdNi/Nb trilayers in the vortex state and we compare the results to data taken. with the same technique on a Nb thin film. We show that it is possible to directly extract the. genuine flux-flow resistivity from our frequency-dependent measurements without overcoming. the (depinning) critical current. The characteristic frequency for vortex relaxation can also be. estimated, without resorting to a specific model. We find that the F layer determines a. weakening of pinning and an enhancement of the flux-flow resistivity with respect to the Nb. film.
Silva E, Pompeo N, & Sarti S (2011). Wideband microwave measurements in Nb/Pd(84)Ni(16)/Nb structures and comparison with thin Nb films. SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 24(2), 024018-1-024018-8 [10.1088/0953-2048/24/2/024018].
Titolo: | Wideband microwave measurements in Nb/Pd(84)Ni(16)/Nb structures and comparison with thin Nb films | |
Autori: | ||
Data di pubblicazione: | 2011 | |
Rivista: | ||
Citazione: | Silva E, Pompeo N, & Sarti S (2011). Wideband microwave measurements in Nb/Pd(84)Ni(16)/Nb structures and comparison with thin Nb films. SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 24(2), 024018-1-024018-8 [10.1088/0953-2048/24/2/024018]. | |
Handle: | http://hdl.handle.net/11590/278890 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |