A5041278913- Physics of Superconductivity and Magnetism
- Magnetic and transport properties of perovskites and related materials
- Quantum Information and Cryptography
- Electronic and Structural Properties of Oxides
- Conducting polymers and applications
- Quantum and electron transport phenomena
- Iron-based superconductors research
- Advanced Condensed Matter Physics
- Cold Atom Physics and Bose-Einstein Condensates
- Superconducting and THz Device Technology
- Rare-earth and actinide compounds
- Advanced Sensor and Energy Harvesting Materials
- Semiconductor materials and devices
- Quantum optics and atomic interactions
- Organic Electronics and Photovoltaics
- Dark Matter and Cosmic Phenomena
- Graphene research and applications
- Carbon Nanotubes in Composites
- Perovskite Materials and Applications
- Mechanical and Optical Resonators
- Nonlinear Dynamics and Pattern Formation
- Analytical Chemistry and Sensors
- Theoretical and Computational Physics
- Atomic and Subatomic Physics Research
- Magnetic properties of thin films
University of Salerno
2015-2024
Istituto Nazionale di Fisica Nucleare, Gruppo Collegato di Salerno
2020-2024
Superconducting and other Innovative Materials and Devices Institute
2021-2024
Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
2023
Istituto Nazionale di Fisica Nucleare
2023
Università degli studi di Cassino e del Lazio Meridionale
2007
Université Sorbonne Paris Nord
2007
École Nationale Supérieure d'Ingénieurs de Caen
2007
GREYC
2007
Université de Caen Normandie
2007
Abstract In the present study, random current fluctuations measured at different temperatures and for illumination levels are used to understand charge carrier kinetics in methylammonium lead iodide CH 3 NH PbI ‐based perovskite solar cells. A model, combining trapping/detrapping, recombination mechanisms, electron–phonon scattering, is formulated evidencing how presence of shallow deeper band tail states influences cell losses. At low temperatures, observed cascade capture process indicates...
A water-processable and low-cost nanocomposite material, based on gelatin graphene, has been used to fabricate an environmentally friendly temperature sensor. Demonstrating a temperature-dependent open-circuit voltage between 260 310 K, the sensor effectively detects subzero ice formation. Notably, it maintains constant sensitivity of approximately −19 mV/K over two years, showcasing long-term stability. Experimental evidence demonstrates efficient regeneration aged sensors by injecting few...
We numerically investigate the behavior of a Josephson traveling wave parametric amplifier assuming current-phase relation with second--harmonic contribution. find that varying weight harmonic terms in current affects gain profile. The analysis characteristics, phase-space portraits, Poincar\'e sections, and Fourier spectra demonstrates nonsinusoidal contribution influences operating mode stability device. In particular, we identify optimal weighting contributions maximizes amplification,...
Abstract The temperature-dependent electrical behavior of an environmentally friendly, symmetric carbon-based supercapacitor with a gelatin-based hydrogel electrolyte containing acetate salt has been investigated. In addition to the electrolyte, electrodes have fabricated using sustainable components, including chitosan as binder and activated carbon derived from coconut shells. To assess impact temperature on electrochemical properties devices overall performance, experimental measurements...
A theoretical model, combining trapping/detrapping and recombination mechanisms, is formulated to explain the origin of random current fluctuations in silicon-based solar cells. In this framework, comparison between dark photo-induced noise allows determination important electronic parameters defect states. detailed analysis electric noise, at different temperatures for illumination levels, reported crystalline cells, pristine form after artificial degradation with high energy protons. The...
The low-temperature $(<60\phantom{\rule{0.3em}{0ex}}\mathrm{K})$ transport properties of as-grown ${\mathrm{La}}_{0.7}{\mathrm{Sr}}_{0.3}\mathrm{Mn}{\mathrm{O}}_{3}$ ultrathin films, deposited by the molecular beam epitaxy, have been investigated as a function sample thickness (from $40\phantom{\rule{0.3em}{0ex}}\text{to}\phantom{\rule{0.3em}{0ex}}3.5\phantom{\rule{0.3em}{0ex}}\mathrm{nm}$) and in presence an external magnetic field. With decreasing thickness, clear resistivity minimum...
Abstract The hybrid perovskite methylammonium lead iodide CH 3 NH PbI recently revealed its potential for the manufacturing of low-cost and efficient photovoltaic cells. However, many questions remain unanswered regarding physics charge carrier conduction. In this respect, it is known that two structural phase transitions, occurring at temperatures near 160 310 K, could profoundly change electronic properties material, but, up to now, a clear experimental evidence has not been reported....
We propose a scheme for the detection of microwave induced photons through current-biased Josephson junction, from point view statistical decision theory. Our analysis is based on numerical study zero voltage lifetime distribution in response to periodic train pulses, that mimics absorption photons. The properties are retrieved comparing thermally transitions with switchings finite state due joint action thermal noise and incident pulses. capability discriminate photon arrival can be...
Noise spectroscopy is essentially focused on the investigation of electric fluctuations produced by physical mechanisms intrinsic to conductor materials. Very complex electrical transport phenomena can be interpreted through study fluctuation properties, which provide interesting information both from point view basic research and applications. In this respect, low-frequency noise analysis was proposed more than twenty years ago determine quality solar cells photovoltaic modules, and,...
Electric noise measurements can give useful information on the conduction mechanisms and dynamic behaviors of charge carriers in new materials. However, it is well known that not all electronic fluctuations are originated from material itself, but some sources depend experimental procedures used for measurements. In this article, an technique to reduce “external” components, associated with bulk system, presented. The proposed method based voltage spectral density, using sequence a four-...
A detailed electric noise investigation of polymer:fullerene solar cells, at 300 K under dark conditions, is reported. The experimental results are interpreted in terms a model taking into account the device capacitance and recombination resistance. Relevant parameters cells can be computed through fluctuation spectroscopy, have been compared with those obtained by alternative techniques. After thermal treatment 340 K, modification voltage-spectral traces has observed related to strong cell...
In this paper, a dc current source dedicated to fourprobe low-frequency noise measurements is presented. An output impedance value of 3 MQ with maximum 1.5 mA was achieved. The white level the measured be 4 × 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-23</sup> A xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> · Hz-1 corner frequency 30 Hz. Thanks its quasi-ideal behavior in terms and high value, can used measure intrinsic materials...
An environmentally-friendly temperature sensor has been fabricated by using a low-cost water-processable nanocomposite material based on gelatin and graphene. The dependence of the electrochemical properties investigated cyclic voltammetry, chronopotentiometry impedance spectroscopy measurements. simple symmetric device, composed sandwich structure between two metal foils printable graphene-gelatin blend, exhibits open-circuit voltage in range 260 310 K. Additionally, at subzero temperature,...
Electrical current transport and low-frequency noise spectra of multiwall carbon nanotubes in high-density polyethylene matrix have been measured a temperature range between 10 300K. The dc electrical investigations suggest that these composites can be regarded as random resistor network, where the resistors are formed by tunnel junctions nanotubes. A crossover conduction from low-field to high-field regime is found current-voltage characteristics. In particular, has strong dependence on...
An important step forward for the understanding of high-temperature superconductivity has been discovery iron-based superconductors. Among these compounds, iron pnictides could be used high-field magnet applications, resulting more advantageous over conventional superconductors, due to a high upper critical field as well its low anisotropy at temperatures. However, principal obstacle in fabricating quality superconducting wires and tapes is given by grain boundaries. In order study effects,...
Carbon nanotubes added to polymer and epoxy matrices are compounds of interest for applications in electronics aerospace. The realization high-performance devices based on these materials can profit from the investigation their electric noise properties, as this gives a more detailed insight basic charge carriers transport mechanisms at work. dc electrical characteristics different polymer/carbon composites have been analyzed 10 300 K. results suggest that all systems be regarded random...
The discovery of iron-based superconductors paved the way for advanced possible applications, mostly in high magnetic fields, but also electronics. Among superconductive devices, nanowire detectors have raised a large interest recent years, due to their ability detect single photon visible and infrared (IR) spectral region. Although not yet optimal single-photon detection, superconducting would bring clear advantages operating temperature, possibly profiting other peculiar material...
Abstract Reducing noise to the quantum limit over a large bandwidth is fundamental requirement for future applications operating at millikelvin temperatures, such as neutrino mass measurement, next-generation X-ray observatory, CMB dark matter and axion detection, rapid high-fidelity readout of superconducting qubits. The read out sensitivity arrays microcalorimeter detectors, resonant axion-detectors, qubits, currently limited by temperature cryogenic amplifiers. Detector Array Readout with...
Abstract The electrochemical characteristics and stability of hydrogel‐based environmentally friendly supercapacitors employing sodium acetate as salt have been investigated. To ensure the overall sustainability devices, chitosan (a biomaterial from renewable resources) activated carbon (derived coconut shells) used a binder filler within electrodes, respectively. Cyclic voltammetry, galvanostatic charge/discharge, impedance spectroscopy measurements performed to compare properties...
Quantum Sensing is a rapidly expanding research field that finds one of its applications in Fundamental Physics, as the search for Dark Matter. Devices based on superconducting qubits have already been successfully applied detecting few-GHz single photons via Non-Demolition measurement (QND). This technique allows us to perform repeatable measurements, bringing remarkable sensitivity improvements and dark count rate suppression experiments high-precision microwave photon detection, such...
This study presents recent advancements in Josephson Traveling Wave Parametric Amplifiers (JTWPAs) developed and tested at INRiM within the DARTWARS project framework. Combining junctions with superconducting coplanar waveguides, JTWPAs offer advanced capabilities for quantum-limited broadband microwave amplification emission of non-classical radiation. The work delves into architecture, optimization, experimental characterization a JTWPA Resonant Phase-Matching mechanism, highlighting...