TY  - JOUR
AU  - Korneeva, Y.
AU  - Florya, I.
AU  - Vdovichev, S.
AU  - Moshkova, M.
AU  - Simonov, N.
AU  - Kaurova, N.
AU  - Korneev, A.
AU  - Goltsman, G.
PY  - 2017
DA  - 2017//
TI  - Comparison of hot spot formation in nbn and mon thin superconducting films after photon absorption
T2  - IEEE Trans. Appl. Supercond.
JO  - IEEE Trans. Appl. Supercond.
SP  - 1
EP  - 4
VL  - 27
IS  - 4
KW  - MoNx SSPD
AB  - In superconducting single-photon detectors (SSPD), the efficiency of local suppression of superconductivity and hotspot formation is controlled by diffusivity and electron-phonon interaction time. Here, we selected a material, 3.6-nm-thick MoNx film, which features diffusivity close to those of NbN traditionally used for SSPD fabrication, but with electron-phonon interaction time an order of magnitude larger. In MoN ∞ detectors, we study the dependence of detection efficiency on bias current, photon energy, and strip width, and compare it with NbN SSPD. We observe nonlinear current-energy dependence in MoNx SSPD and more pronounced plateaus in dependences of detection efficiency on bias current, which we attribute to longer electron-phonon interaction time.
SN  - 1051-8223
UR  - http://ieeexplore.ieee.org/document/7835201/
UR  - https://doi.org/10.1109/TASC.2017.2659661
DO  - 10.1109/TASC.2017.2659661
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=1325), last updated on Mon, 10 May 2021 21:35:04 -0500
ID  - Korneeva_etal2017
ER  -