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Abstract Measurements of the electrical transport properties of the phase-slip-free 100-nm-wide NbN superconducting nanostructured single photon detector (SNSPD) as a function of temperature and applied magnetic field are reported. The… Click to show full abstract
Abstract Measurements of the electrical transport properties of the phase-slip-free 100-nm-wide NbN superconducting nanostructured single photon detector (SNSPD) as a function of temperature and applied magnetic field are reported. The observed characteristics suggest Abrikosov vortices tunneling (flux creep) behavior at low temperatures and low voltages followed by flux flow regime at higher voltages and domination of this regime close to the critical temperature. It differs from the behavior of phase-slip-free 700-nm-wide NbTiN bridge structure of similar length where flux creep is followed by abrupt jump into highly resistive critical state.
Journal Title: Physica C: Superconductivity and its Applications
Year Published: 2019
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