Comparison of Hot-Spot Formation in NbC and NbN Single-Photon Detectors

IEEE Transactions on Applied Superconductivity(2016)

Cited 6|Views21
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Abstract
We report an experimental investigation of the hot-spot evolution in superconducting single-photon detectors made of disordered superconducting materials with different diffusivity and energy downconversion time values, i.e., 33-nm-thick NbN and 23-nm-thick NbC films. We have demonstrated that, in NbC film, only 405-nm photons produce sufficiently large hot spot to trigger a single-photon response...
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Key words
Photonics,Films,Strips,Detectors,Superconducting films,Critical current density (superconductivity),Biological system modeling
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