Hybrid ferromagnetic transmon qubit: Circuit design, feasibility, and detection protocols for magnetic fluctuations

HG Ahmad, V Brosco, A Miano, L Di Palma, M Arzeo… - Physical Review B, 2022 - APS
We propose to exploit currently available tunnel ferromagnetic Josephson junctions to
realize a hybrid superconducting qubit. We show that the characteristic hysteretic behavior …

[HTML][HTML] Triplet odd-frequency superconductivity in hybrid superconductor–ferromagnet structures

FS Bergeret, AF Volkov - Annals of Physics, 2023 - Elsevier
We present an overview of the contributions made by Konstantin B. Efetov and the authors to
the field of triplet odd-frequency superconductivity in hybrid ferromagnet–superconductor …

Nanoscale spin ordering and spin screening effects in tunnel ferromagnetic Josephson junctions

R Satariano, AF Volkov, HG Ahmad… - Communications …, 2024 - nature.com
Abstract Magnetic Josephson junctions (MJJs) have emerged as a prominent playground to
explore the interplay between superconductivity and ferromagnetism. A series of fascinating …

Aluminum-ferromagnetic Josephson tunnel junctions for high quality magnetic switching devices

A Vettoliere, R Satariano, R Ferraiuolo… - Applied Physics …, 2022 - pubs.aip.org
The competition between superconducting and ferromagnetic orderings in Josephson
devices has promoted fundamental and applicative studies of high impact for …

Enhanced Josephson coupling in hybrid nanojunctions

D Montemurro, DS Golubev, S Kubatkin, F Tafuri… - Physical Review B, 2023 - APS
We have fabricated NbN/Au nanogaps and bridged them with an Al superconductor using Ti
as an interlayer. The nanodevices show a critical current density at 300 mK as high as 3× 10 …

A feasible path for the use of ferromagnetic Josephson junctions in quantum circuits: the ferro-transmon

D Massarotti, HG Ahmad, R Satariano… - Low Temperature …, 2023 - pubs.aip.org
We discuss the capabilities of ferromagnetic (F) Josephson junctions (JJs) in a variety of
layouts and configurations. The main goal is to demonstrate the potential of these hybrid JJs …

Competition of quasiparticles and magnetization noise in hybrid ferromagnetic transmon qubits

HG Ahmad, V Brosco, A Miano… - IEEE Transactions …, 2023 - ieeexplore.ieee.org
The coexistence between ferromagnetic ordering and superconducting transport in tunnel
ferromagnetic Josephson junctions (SFS JJs) accounts for a wide range of unconventional …

Phase dynamics of tunnel Al-based ferromagnetic Josephson junctions

HG Ahmad, R Satariano, R Ferraiuolo… - Applied Physics …, 2024 - pubs.aip.org
By measuring the current–voltage characteristics and the switching current distributions as a
function of temperature, we have investigated the phase dynamics of Al tunnel ferromagnetic …

Absence of magnetic interactions in Ni–Nb ferromagnet–superconductor bilayers

N Satchell, P Quarterman, JA Borchers… - Superconductor …, 2023 - iopscience.iop.org
Studies of ferromagnet-superconductor hybrid systems have uncovered magnetic
interactions between the competing electronic orderings. The electromagnetic (EM) …

Insights into the Electrical Characterization of Graphene-like Materials from Carbon Black

R Ferraiuolo, M Alfe, V Gargiulo, GP Pepe, F Tafuri… - Coatings, 2022 - mdpi.com
A new class of graphene-related materials (GRMs) obtained as water suspensions through
a two-step oxidation/reduction of a nanostructured carbon black, namely graphene-like (GL) …