Quasiparticle relaxation mechanisms in superconductor/ferromagnet bilayers

C Attanasio, C Cirillo - Journal of Physics: Condensed Matter, 2012 - iopscience.iop.org
In this paper we review some recent results obtained on superconducting/ferromagnetic
(S/F) structures when measuring the dynamic instabilities of the vortex lattice at high driving …

Thermodynamic nature of the quantum transition in superconductor/ferromagnet/superconductor trilayers

N Pompeo, K Torokhtii, C Cirillo, AV Samokhvalov… - Physical Review B, 2014 - APS
In structures made up of alternating superconducting and ferromagnet layers (S/F/S
heterostructures), it is known that the macroscopic quantum wave function of the ground …

Determination of the transition temperature of a weak ferromagnetic thin film by means of an evolution of the method based on the arrott plots

A Galluzzi, D Mancusi, C Cirillo, C Attanasio… - … of Superconductivity and …, 2018 - Springer
The ferromagnetic transition temperature (T c) of a weak ferromagnetic thin film Cu 0.38 Ni
0.62 has been estimated by using an evolution of the Belov, Goriaga, and Arrott (BGA) …

Robustness of the transition against compositional and structural ageing in superconductor/ferromagnetic/superconductor heterostructures

R Loria, C Meneghini, K Torokhtii, L Tortora, N Pompeo… - Physical Review B, 2015 - APS
We have studied the temperature induced 0-π thermodynamic transition in Nb/PdNi/Nb
superconductor/ferromagnetic/superconductor (SFS) heterostructures by microwave …

Evidence for a junction in trilayers revealed by superfluid density measurements

MJ Hinton, S Steers, B Peters, FY Yang, TR Lemberger - Physical Review B, 2016 - APS
We report measurements of the superfluid density, λ− 2 (T), in ferromagnet-on-
superconductor (F/S) bilayers and S/F/S′ trilayers comprising Nb with Ni, Py, CoFe, and …

Multiple order parameter configurations in superconductor/ferromagnet multilayers

VN Kushnir, SL Prischepa, C Cirillo, A Vecchione… - Physical Review B …, 2011 - APS
The coupling of two superconductors (S) through a ferromagnet (F) can lead to either a zero-
or a π-phase difference between the superconducting banks. Most research in this area is …

X-ray scattering study of interfacial roughness in Nb/PdNi multilayers

A Vecchione, R Fittipaldi, C Cirillo, M Hesselberth… - Surface science, 2011 - Elsevier
Specular and diffuse X-ray scattering are used to study interfacial roughness in Nb/Pd0.
81Ni0. 19 multilayers deposited by dc UHV sputtering. The data are analyzed to extract …

Role of disorder in the superconducting proximity effect in bilayers

C Cirillo, A Leo, F Urban, H Bradshaw, E Ponticorvo… - Physical Review B, 2021 - APS
The search for optimal materials to be used in superconductor/ferromagnet hybrids is
fundamental to the development of superconducting spintronic devices. One of the main …

Quasiparticles relaxation processes in Nb/CuNi bilayers

EA Ilyina, C Cirillo, C Attanasio - The European Physical Journal B, 2011 - Springer
The dynamic instability of the moving vortex lattice at high driving currents has been studied
in superconductor (S)/weak ferromagnet (F) bilayer, Nb/Cu 0.38 Ni 0.62. Voltage-current, V …

Non-monotonic behaviour of the superconducting order parameter in Nb/PdNi bilayers observed through point contact spectroscopy

P Romano, A Polcari, C Cirillo… - … Science and Technology, 2012 - iopscience.iop.org
Point contact spectroscopy measurements have been performed on Nb/PdNi bilayers in
which the thickness of the Nb layer, d Nb, was kept constant at 40 nm while the thickness of …