6 papers
Electrodynamics of the Superconducting State in Ultra-Thin Films at THz Frequencies
Uwe S. Pracht, Eric Heintze, Conrad Clauss +11
We report on terahertz frequency-domain spectroscopy (THz-FDS) experiments in which we measure charge carrier dynamics and excitations of thin-film superconducting systems at low t…
Detection Efficiency of a Spiral-Nanowire Superconducting Single-Photon Detector
D. Henrich, L. Rehm, S. Dörner +4
We investigate the detection efficiency of a spiral layout of a Superconducting Nanowire Single-Photon Detector (SNSPD). The design is less susceptible to the critical current redu…
Infrared photo-response of Fe-shunted Ba-122 thin film microstructures
L. Rehm, D. Henrich, M. Hofherr +10
We present a study of the response to pulsed infrared radiation of Fe-layer shunted pnictide thin film microstructures. The thin film multilayer consisting of 20 nm thick Fe-buffer…
Temperature-dependence of detection efficiency in NbN and TaN SNSPD
Andreas Engel, Kevin Inderbitzin, Andreas Schilling +7
We present systematic measurements of the temperature-dependence of detection efficiencies in TaN and NbN superconducting nanowire single-photon detectors. We have observed a clear…
Broadening of hot-spot response spectrum of superconducting NbN nanowire single-photon detector with reduced nitrogen content
D. Henrich, S. Dörner, M. Hofherr +6
The spectral detection efficiency and the dark count rate of superconducting nanowire single-photon detectors (SNSPD) has been studied systematically on detectors made from thin Nb…
Geometry-induced reduction of the critical current in superconducting nanowires
D. Henrich, P. Reichensperger, M. Hofherr +5
Reduction of the critical current in narrow superconducting NbN lines with sharp and rounded bends with respect to the critical current in straight lines was studied at different t…