Goltsman GN, Korneev AA, Finkel MI, Divochiy AV, Florya IN, Korneeva YP, et al. Superconducting hot-electron bolometer as THz mixer, direct detector and IR single-photon counter [abstract]. In: 35th Int. Conf. Infrared, Millimeter, and Terahertz Waves.; 2010. p. 1.
Abstract: We present a new generation of superconducting single-photon detectors (SSPDs) and hot-electron superconducting sensors with record characteristic for many terahertz and optical applications.
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Florya IN, Korneeva YP, Sidorova MV, Golikov AD, Gaiduchenko IA, Fedorov GE, et al. Energy relaxtation and hot spot formation in superconducting single photon detectors SSPDs. In: EPJ Web of Conferences. Vol 103.; 2015. 10004 (1 to 2).
Abstract: We have studied the mechanism of energy relaxation and resistive state formation after absorption of a single photon for different wavelengths and materials of single photon detectors. Our results are in good agreement with the hot spot model.
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Simonov NO, Korneeva YP, Korneev AA, Goltsman GN. Enhance of the superconducting properties of the NbN/Au bilayer bridges. In: J. Phys.: Conf. Ser. Vol 1695.; 2020. 012132 (1 to 4).
Abstract: We experimentally demonstrate strong temperature dependence of the critical current of the superconducting 600-nm-wide and 5-μm-long bridge made of NbN/Au bilayer. The result is achieved due to the proximity effect realized between the highly disordered superconducting NbN layer and low resistive normal-metal Au layer.
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Arutyunov KY, Ramos-Álvarez A, Semenov AV, Korneeva YP, An PP, Korneev AA, et al. Quasi-1-dimensional superconductivity in highly disordered NbN nanowires [Internet].; 2016 [cited 2024 Jul 4].arXiv:1602.07932v1 [cond-mat.supr-con]
Abstract: The topic of superconductivity in strongly disordered materials has attracted a significant attention. In particular vivid debates are related to the subject of intrinsic spatial inhomogeneity responsible for non-BCS relation between the superconducting gap and the pairing potential. Here we report experimental study of electron transport properties of narrow NbN nanowires with effective cross sections of the order of the debated inhomogeneity scales. We find that conventional models based on phase slip concept provide reasonable fits for the shape of the R(T) transition curve. Temperature dependence of the critical current follows the text-book Ginzburg-Landau prediction for quasi-one-dimensional superconducting channel Ic~(1-T/Tc)^3/2. Hence, one may conclude that the intrinsic electronic inhomogeneity either does not exist in our structures, or, if exist, does not affect their resistive state properties.
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Sidorova MV, Kozorezov AG, Semenov AV, Korneev AA, Chulkova GM, Korneeva YP, et al. Non-bolometric bottleneck in electron-phonon relaxation in ultra-thin WSi film [Internet].; 2018 [cited 2024 Jul 4].arXiv:1607.07321v4 [physics.ins-det]
Abstract: We developed the model of the internal phonon bottleneck to describe the energy exchange between the acoustically soft ultrathin metal film and acoustically rigid substrate. Discriminating phonons in the film into two groups, escaping and nonescaping, we show that electrons and nonescaping phonons may form a unified subsystem, which is cooled down only due to interactions with escaping phonons, either due to direct phonon conversion or indirect sequential interaction with an electronic system. Using an amplitude-modulated absorption of the sub-THz radiation technique, we studied electron-phonon relaxation in ultrathin disordered films of tungsten silicide. We found an experimental proof of the internal phonon bottleneck. The experiment and simulation based on the proposed model agree well, resulting in tau{e-ph} = 140-190 ps at TC = 3.4 K, supporting the results of earlier measurements by independent techniques.
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