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Article
Life cycle of scientific publications in the field of high social impact
In a previous work, we have presented an innovative theoretical model to describe the evolution of the life cycle of a new technology. We have proposed a mathematical approach based on a rate equation, similar...
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Chapter and Conference Paper
Nanostructured Superconductive Sensors Based on Quantum Interference Effect for High Sensitive Nanoscale Applications
Recently it has been proven that the magnetic response of magnetic nano-objects such as nanoparticles, nanobeads, and small cluster of molecules can be effectively measured by using a Superconducting Quantum I...
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Chapter and Conference Paper
Nanosensors Based on Superconducting Quantum Interference Device for Nanomagnetism Investigations
Recent results about the design, the fabrication and the characterization of Dayem bridges based nano-SQUIDs having a loop area ranging from 4 to 0.04 μm2 are reported. The devices have been patterned by electron...
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Chapter and Conference Paper
An Ultra High Sensitive Current Sensor Based on Superconducting Quantum Interference Device
The developed sensor design is based on a suitable superconducting intermediary (matching) magnetic flux transformer magnetically coupled to a niobium based dc-SQUID (Superconducting Quantum Interference Devic...
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Chapter and Conference Paper
Squid Sensors for High Spatial Resolution Magnetic Imaging and for Nanoscale Applications
We present the improved Superconducting Quantum Interference Devices (SQUID) for magnetic microscopy and for nanoscale investigations. Low critical Temperature SQUIDs with integrated micro pick-up coils (with ...
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Article
Resonant Quantum Phenomena for an rf-SQUID: Moderate Underdamped and Extreme Underdamped Limit
We study the resonant quantum behaviour of a macroscopic superconducting system interacting with an external field. First we consider the resonant tunneling assisted by microwave frequency in the moderate unde...
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Book
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Book
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Chapter
Squid Systems in View of Macroscopic Quantum Coherence And Adiabatic Quantum Gates
We present the characterization of a fully integrated Josephson device consisting of an rf-SQUID coupled to a readout system based on a dc-SQUID sensor. In the classical regime, data on the decay rate from the...
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Chapter
Macroscopic Quantum Phenomena in Underdamped Josephson Junctions
We present an experimental study of the supercurrent decay in extremely underdamped Josephson junctions. In the thermal regime, we present data on the rate of escape from the supercurrent state as function of ...
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Article
Experimental Evaluation of the Intrinsic Dissipation from Energy-Level Quantization in Josephson Devices
The main problem in realizing an experiment of macroscopic quantum coherence, namely, an experiment where the nonclassical behavior of a macroscopic system must be detected, is the fulfillment of many experime...
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Article
Direct Evidence of Macroscopic Quantum Effects at High Temperature
We present experiments on macroscopic quantum effects in Josephson junctions with different relevant junction parameters at a temperature well above the classical-quantum crossover temperature. This has been p...
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Article
Considerations on resonant macroscopic quantum tunneling in SQUID systems
We present a theoretical analysis of the resonant macroscopic quantum tunneling in SQUID systems including the effect of both the temperature and the swee** rate of the external flux, and the study of the ph...
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Article
Sputtered YBCO bicrystal dc-SQUIDS
An analysis of YBa2Cu3O7 −δ bicrystal dc-SQUIDs is reported. The devices have been fabricated by dc cylindrical magnetron sputtering from a single target. SQUIDs operating at the liquid nitrogen temperature have ...
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Article
Comments on an experiment of resonant tunnelling between macroscopically distinct quantum levels
In an important experiment performed on a SQUID system, Rouse, Han and Lukens report the first observation of resonant tunnelling between macroscopically distinct quantum levels. We support the experiment with...
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Article
Aspects of macroscopic quantum tunnelling in small Josephson junctions
We study the effect of temperature on the lifetime of the resonant macroscopic quantum tunnelling voltage state. In view of experiments we consider a merit factor in order to balance between measuring extremel...
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Article
HTSC grain boundary weak links employing high-quality ICM sputtered YBCO films
Bicrystal grain boundary junctions of YBCO have been fabricated by using the Inverted Cylindrical Magnetron d.c. sputtering technique. The main characteristics of the junction behaviour are reported. Some aspe...
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Article
High-quality YBCO d.c. SQUIDs based on bicrystal substrates
An analysis of superconducting transport properties and magnetic behaviour of d.c. SQUIDs employing YBCO bicrystal grain boundary junctions (GBJs) has been performed. GBJs have been obtained by deposition of ac-a...
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Article
YBCO step-edge SQUIDs by magnetron sputtering technique
YBCO step-edge junction d.c. SQUIDs have been realized by using the Inverted Cylindrical Magnetron Sputtering (ICMS) technique. This last represents a novel technology for high-T c Josephson junct...
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Article
Structural investigation of YBCO films and bicrystal grain boundary junctions
We present a structural analysis of YBCO superconducting thin films fabricatedin situ by Inverted Cylindrical Magnetron (ICM) sputtering on commercial SrTiO3 single-crystal and bicrystal substrates. A detailed st...
