Searched for: collection%253Air
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Korneeva, Yuliya (author), Vodolazov, Denis (author), Florya, Irina (author), Manova, Nadegda (author), Smirnov, Eugenii (author), Korneev, Alexander (author), Mikhailov, Michail (author), Goltsman, Gregory (author), Klapwijk, T.M. (author)
We experimentally demonstrate the single photon detection in straight micrometer-wide NbN and α-MoSi bridges. Width of the bridges is 2 μm, while the wavelength of the photon changes from 408 to 1550 nm and critical current exceeds 50% of the depairing current. Obtained results offer the alternative route for design of detectors without...
journal article 2018
document
Titova, Nadezhda (author), Kardakova, Anna I. (author), Tovpeko, Nina (author), Ryabchun, Sergey (author), Mandal, Soumen (author), Morozov, Dmitry (author), Klemencic, Georgina M. (author), Giblin, Sean R. (author), Williams, Oliver A. (author), Goltsman, Gregory N. (author), Klapwijk, T.M. (author)
We have measured the electron-phonon energy-relaxation time, τ<sub>eph</sub>, in superconducting boron-doped diamond films grown on silicon substrate by chemical vapor deposition. The observed electron-phonon cooling times vary from 160 ns at 2.70 K to 410 ns at 1.8 K following a T<sup>-2</sup>-dependence. The data are consistent with the...
journal article 2017
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Shcherbatenko, M. (author), Tretyakov, I. (author), Lobanov, Yu (author), Maslennikov, S. N. (author), Kaurova, N. (author), Finkel, M. (author), Voronov, B. (author), Goltsman, G. (author), Klapwijk, T.M. (author)
We present a physically consistent interpretation of the dc electrical properties of niobiumnitride (NbN)-based superconducting hot-electron bolometer mixers, using concepts of nonequilibrium superconductivity. Through this, we clarify what physical information can be extracted from the resistive transition and the dc current-voltage...
journal article 2016
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Kardakova, A. (author), Shishkin, A. (author), Semenov, A. (author), Goltsman, G.N. (author), Ryabchun, S. (author), Klapwijk, T.M. (author), Bousquet, J. (author), Eon, D. (author), Sacépé, B. (author), Klein, T. (author), Bustarret, E. (author)
We report a study of the relaxation time of the restoration of the resistive superconducting state in single crystalline boron-doped diamond using amplitude-modulated absorption of (sub-)THz radiation (AMAR). The films grown on an insulating diamond substrate have a low carrier density of about 2.5×1021cm?3 and a critical temperature of about 2K...
journal article 2016
document
Kardakova, A. (author), Finkel, M. (author), Morozov, D. (author), Kovalyuk, V. (author), An, P. (author), Dunscombe, C. (author), Tarkhov, M. (author), Mauskopf, P. (author), Klapwijk, T.M. (author), Goltsman, G. (author)
We report on the direct measurement of the electron-phonon relaxation time, ?eph, in disordered TiN films. Measured values of ?eph are from 5.5?ns to 88?ns in the 4.2 to 1.7?K temperature range and consistent with a T?3 temperature dependence. The electronic density of states at the Fermi level N0 is estimated from measured material parameters....
journal article 2013
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Fedorov, G. (author), Kardakova, A. (author), Gayduchenko, I. (author), Charayev, I. (author), Voronov, B.M. (author), Finkel, M. (author), Klapwijk, T.M. (author), Morozov, S. (author), Presniakov, M. (author), Bobrinetskiy, I. (author), Ibragimov, R. (author), Goltsman, G. (author)
We report on the voltage response of carbon nanotube devices to sub-terahertz (THz) radiation. The devices contain carbon nanotubes (CNTs), which are over their length partially suspended and partially Van der Waals bonded to a SiO2 substrate, causing a difference in thermal contact. We observe a DC voltage upon exposure to 140?GHz radiation....
journal article 2013
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