C. Cirillo
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View article: Superconducting nanowire single photon detectors based on NbRe nitride ultrathin films
Superconducting nanowire single photon detectors based on NbRe nitride ultrathin films Open
The influence of the reactive DC sputtering parameters on the superconducting properties of NbReN ultrathin films was investigated. A detailed study of the current–voltage characteristics of the plasma was performed to optimize the superco…
View article: Unveiling Intrinsic Triplet Superconductivity in Noncentrosymmetric NbRe through Inverse Spin-Valve Effects
Unveiling Intrinsic Triplet Superconductivity in Noncentrosymmetric NbRe through Inverse Spin-Valve Effects Open
NbRe is a non-centrosymmetric superconductor that has been proposed as a candidate for intrinsic spin-triplet pairing. However, a conclusive demonstration of triplet pairing in NbRe is yet to be found. To probe the presence of equal-spin t…
View article: Superconducting Nanowire Single Photon Detectors based on NbRe nitride ultrafilms
Superconducting Nanowire Single Photon Detectors based on NbRe nitride ultrafilms Open
The influence of the reactive DC sputtering parameters on the superconducting properties of NbReN ultrathin films was investigated. A detailed study of the current-voltage characteristics of the plasma was performed to optimize the superco…
View article: High-performance HER on magnetron-sputtered nanometric Nb films on porous silicon substrates
High-performance HER on magnetron-sputtered nanometric Nb films on porous silicon substrates Open
The hydrogen evolution reaction (HER) stands out as one of the most extensively studied electrocatalytic re actions in literature. Herein, niobium has been tested for the first time for the catalysis of the HER in the form of nanometer-thi…
View article: Demonstration of high-impedance superconducting NbRe Dayem bridges
Demonstration of high-impedance superconducting NbRe Dayem bridges Open
Here, we demonstrate superconducting Dayem-bridge weak-links made of different stoichiometric compositions of NbRe. Our devices possess a relatively high critical temperature, normal-state resistance, and kinetic inductance. In particular,…
View article: Gate-controlled supercurrent effect in dry-etched Dayem bridges of non-centrosymmetric niobium rhenium
Gate-controlled supercurrent effect in dry-etched Dayem bridges of non-centrosymmetric niobium rhenium Open
The application of a gate voltage to control the superconducting current flowing through a nanoscale superconducting constriction, named as gate-controlled supercurrent (GCS), has raised great interest for fundamental and technological rea…
View article: Characterization of quasiparticle relaxation times in microstrips of NbReN for perspective applications for superconducting single-photon detectors
Characterization of quasiparticle relaxation times in microstrips of NbReN for perspective applications for superconducting single-photon detectors Open
The study of the flux-flow instability in superconducting materials has recently gained renewed attention due to its potential implications for the use of the analyzed materials as micrometer-sized superconducting detectors for single phot…
View article: Critical temperature of triplet superconductor-ferromagnet bilayers as a probe for pairing symmetry
Critical temperature of triplet superconductor-ferromagnet bilayers as a probe for pairing symmetry Open
Identifying superconducting materials with spin-polarized Cooper pairs is an important objective both for exploration of new fundamental physics and for cryogenic applications in spintronics and quantum sensing. We here compute the critica…
View article: IRIS-A New Distributed Research Infrastructure on Applied Superconductivity
IRIS-A New Distributed Research Infrastructure on Applied Superconductivity Open
In the frame of the Next Generation Europe program, the EU program to boost after-COVID recovery, the Italian Minister of University and Research has funded a project called Innovative Research Infrastructure for applied Superconductivity …
View article: Vortex Motion Study of Oxidised Superconducting NbRe Microstrips
Vortex Motion Study of Oxidised Superconducting NbRe Microstrips Open
We report measurements of the flux flow instability velocity in 8nm thin superconducting NbRe microstrips. In particular, a change in vortex motion after the film has been lightly oxidised is observed. We propose a possible mechanism accor…
View article: Gate-controlled supercurrent effect in dry-etched Dayem bridges of non-centrosymmetric niobium rhenium
Gate-controlled supercurrent effect in dry-etched Dayem bridges of non-centrosymmetric niobium rhenium Open
The application of a gate voltage to control the superconducting current flowing through a nanoscale superconducting constriction, named as gate-controlled supercurrent (GCS), has raised great interest for fundamental and technological rea…
View article: Demonstration of high-impedance superconducting NbRe Dayem bridges
Demonstration of high-impedance superconducting NbRe Dayem bridges Open
Here we demonstrate superconducting Dayem-bridge weak-links made of different stoichiometric compositions of NbRe. Our devices possess a relatively high critical temperature, normal-state resistance, and kinetic inductance. In particular, …
View article: Rough and Porous Micropebbles of CeCu2Si2 for Energy Storage Applications
Rough and Porous Micropebbles of CeCu2Si2 for Energy Storage Applications Open
Supercapacitors have attracted considerable attention due to their advantages, including being lightweight and having rapid charge–discharge, a good rate capability, and high cyclic stability. Electrodes are one of the most important facto…
View article: Investigation of dark count rate in NbRe microstrips for single photon detection
Investigation of dark count rate in NbRe microstrips for single photon detection Open
Superconducting microstrip single photon detectors (SMSPDs) received great interest since they are expected to combine the excellent performance of superconducting nanostrip single photon detectors with the possibility to cover large activ…
View article: Iron Selenide Particles for High-Performance Supercapacitors
Iron Selenide Particles for High-Performance Supercapacitors Open
Nowadays, iron (II) selenide (FeSe), which has been widely studied for years to unveil the high-temperature superconductivity in iron-based superconductors, is drawing increasing attention in the electrical energy storage (EES) field as a …
View article: Spin pumping in NbRe/Co superconductor-ferromagnet heterostructures
Spin pumping in NbRe/Co superconductor-ferromagnet heterostructures Open
Ferromagnetic resonance (FMR) spectroscopy measurements were performed on NbRe/Co/NbRe trilayers in order to probe spin pumping across the superconductor/ferromagnet interface and to detect the possible presence of spin-triplet pairing in …
View article: Upper critical magnetic field in NbRe and NbReN micrometric strips
Upper critical magnetic field in NbRe and NbReN micrometric strips Open
Non-centrosymmetric superconductors have recently received significant interest due to their intriguing physical properties such as multigap and nodal superconductivity, helical vortex states, as well as non-trivial topological effects. Mo…
View article: Drag Voltages in a Superconductor/Insulator/Ferromagnet Trilayer
Drag Voltages in a Superconductor/Insulator/Ferromagnet Trilayer Open
The interaction between two spatially separated systems is of strong interest in order to study a wide class of unconventional effects at cryogenic temperatures. Here we report on drag transverse voltage effects in multilayered systems con…
View article: Electrical Transport and Fluctuation Processes in NbRe and NbReN Ultrathin Films for Superconducting Electronics Applications
Electrical Transport and Fluctuation Processes in NbRe and NbReN Ultrathin Films for Superconducting Electronics Applications Open
NbRe-based superconducting thin films recently received relevant interest in the field of low-temperature electronics. However, for these materials the electrical conduction mechanisms, in particular in the normal state, still need to be i…
View article: Superconducting critical temperature and softening of the phonon spectrum in ultrathin Nb and NbN/graphene hybrids
Superconducting critical temperature and softening of the phonon spectrum in ultrathin Nb and NbN/graphene hybrids Open
Superconductivity is studied in hybrids consisting of ultrathin superconducting film/few layer graphene. Two different superconductors are used for this purpose, Nb and NbN. An increase in the superconducting critical temperature T c is ob…
View article: Metamorphosis of discontinuity lines and rectification of magnetic flux avalanches in the presence of noncentrosymmetric pinning forces
Metamorphosis of discontinuity lines and rectification of magnetic flux avalanches in the presence of noncentrosymmetric pinning forces Open
peer reviewed
View article: Superconducting Order Parameter Nucleation and Critical Currents in the Presence of Weak Stray Fields in Superconductor/Insulator/Ferromagnet Hybrids
Superconducting Order Parameter Nucleation and Critical Currents in the Presence of Weak Stray Fields in Superconductor/Insulator/Ferromagnet Hybrids Open
The stray fields produced by ferromagnetic layers in Superconductor/Insulator/Ferromagnet (S/I/F) heterostructures may strongly influence their superconducting properties. Suitable magnetic configurations can be exploited to manipulate the…
View article: Universal size-dependent nonlinear charge transport in single crystals of the Mott insulator Ca$_2$RuO$_4$
Universal size-dependent nonlinear charge transport in single crystals of the Mott insulator Ca$_2$RuO$_4$ Open
The surprisingly low current density required for inducing the insulator to metal transition has made Ca$_2$RuO$_4$ an attractive candidate material for developing Mott-based electronics devices. The mechanism driving the resistive switchi…
View article: Magnetotransport and magnetic properties of amorphous $$\mathrm{NdNi}_5$$ thin films
Magnetotransport and magnetic properties of amorphous $$\mathrm{NdNi}_5$$ thin films Open
$$\mathrm{NdNi}_5$$ is an intermetallic compound with a bulk Curie temperature ( $$T_{\mathrm{Curie}}$$ ) of 6–13 K. While existing studies have focused on $$\mathrm{NdNi}_5$$ crystals, amorphous thin-films of $$\mathrm{NdNi}_5$$ are p…
View article: Magnetic flux avalanches in Nb/NbN thin films
Magnetic flux avalanches in Nb/NbN thin films Open
Technological applications of NbN thin films may be threatened by the development of magnetic flux avalanches of thermomagnetic origin appearing in a large portion of the superconducting phase. In this work, we describe an approach to subs…