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Gol’tsman, G. N.; Smirnov, K.; Kouminov, P.; Voronov, B.; Kaurova, N.; Drakinsky, V.; Zhang, J.; Verevkin, A.; Sobolewski, R. |
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Title |
Fabrication of nanostructured superconducting single-photon detectors |
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Journal Article |
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Year |
2003 |
Publication |
IEEE Trans. Appl. Supercond. |
Abbreviated Journal |
IEEE Trans. Appl. Supercond. |
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Volume |
13 |
Issue |
2 |
Pages |
192-195 |
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Keywords |
NbN SSPD, SNSPD |
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Abstract |
Fabrication of NbN superconducting single-photon detectors, based on the hotspot effect is presented. The hotspot formation arises in an ultrathin and submicrometer-width superconductor stripe and, together with the supercurrent redistribution, leads to the resistive detector response upon absorption of a photon. The detector has a meander structure to maximally increase its active area and reach the highest detection efficiency. Main processing steps, leading to efficient devices, sensitive in 0.4-5 /spl mu/m wavelength range, are presented. The impact of various processing steps on the performance and operational parameters of our detectors is discussed. |
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1558-2515 |
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1515 |
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Vakhtomin, Y. B.; Finkel, M. I.; Antipov, S. V.; Smirnov, K. V.; Kaurova, N. S.; Drakinskii, V. N.; Voronov, B. M.; Gol’tsman, G. N. |
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Title |
The gain bandwidth of mixers based on the electron heating effect in an ultrathin NbN film on a Si substrate with a buffer MgO layer |
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Journal Article |
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Year |
2003 |
Publication |
J. of communications technol. & electronics |
Abbreviated Journal |
J. of communications technol. & electronics |
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48 |
Issue |
6 |
Pages |
671-675 |
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NbN HEB mixers |
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Abstract |
Measurements of the intermediate frequency band 900 GHz of mixers based on the electron heating effect (EHE) in 2-nm- and 3.5-nm-thick superconducting NbN films sputtered on MgO and Si substrates with buffer MgO layers are presented. A 2-nm-thick superconducting NbN film with a critical temperature of 9.2 K has been obtained for the first time using a buffer MgO layer. |
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MAIK Nauka/Interperiodica, Birmingham, AL |
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1064-2269 |
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https://elibrary.ru/item.asp?id=17302119 (Полоса преобразования смесителей на эффекте разогрева электронов в ультратонких пленках NbN на подложках из Si с подслоем MgO) |
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Vakhtomin2003 |
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1522 |
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Fedorov, G. E.; Stepanova, T. S.; Gazaliev, A. S.; Gaiduchenko, I. A.; Kaurova, N. S.; Voronov, B. M.; Goltzman, G. N. |
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Asymmetric devices based on carbon nanotubes for terahertz-range radiation detection |
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Journal Article |
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Year |
2016 |
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Semicond. |
Abbreviated Journal |
Semicond. |
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50 |
Issue |
12 |
Pages |
1600-1603 |
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Keywords |
carbon nanotubes, CNT detectors |
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Various asymmetric detecting devices based on carbon nanotubes (CNTs) are studied. The asymmetry is understood as inhomogeneous properties along the conducting channel. In the first type of devices, an inhomogeneous morphology of the CNT grid is used. In the second type of devices, metals with highly varying work functions are used as the contact material. The relation between the sensitivity and detector configuration is analyzed. Based on the data obtained, approaches to the development of an efficient detector of terahertz radiation, based on carbon nanotubes are proposed. |
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1063-7826 |
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1776 |
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Matyushkin, Y.; Danilov, S.; Moskotin, M.; Belosevich, V.; Kaurova, N.; Rybin, M.; Obraztsova, E. D.; Fedorov, G.; Gorbenko, I.; Kachorovskii, V.; Ganichev, S. |
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Title |
Helicity-sensitive plasmonic terahertz interferometer |
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Journal Article |
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2020 |
Publication |
Nano Lett. |
Abbreviated Journal |
Nano Lett. |
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20 |
Issue |
10 |
Pages |
7296-7303 |
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Keywords |
graphene, plasmonic interferometer, radiation helicity, terahertz radiation |
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Plasmonic interferometry is a rapidly growing area of research with a huge potential for applications in the terahertz frequency range. In this Letter, we explore a plasmonic interferometer based on graphene field effect transistor connected to specially designed antennas. As a key result, we observe helicity- and phase-sensitive conversion of circularly polarized radiation into dc photovoltage caused by the plasmon-interference mechanism: two plasma waves, excited at the source and drain part of the transistor, interfere inside the channel. The helicity-sensitive phase shift between these waves is achieved by using an asymmetric antenna configuration. The dc signal changes sign with inversion of the helicity. A suggested plasmonic interferometer is capable of measuring the phase difference between two arbitrary phase-shifted optical signals. The observed effect opens a wide avenue for phase-sensitive probing of plasma wave excitations in two-dimensional materials. |
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CENTERA Laboratories, Institute of High Pressure Physics, PAS, 01-142 Warsaw, Poland |
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1530-6984 |
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PMID:32903004 |
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1781 |
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Tretyakov, I.; Svyatodukh, S.; Chumakova, A.; Perepelitsa, A.; Kaurova, N.; Shurakov, A.; Zilberley, T.; Ryabchun, S.; Smirnov, M.; Ovchinnikov, O.; Goltsman, G. |
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Title |
Room temperature silicon detector for IR range coated with Ag2S quantum dots |
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Conference Article |
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2019 |
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IRMMW-THz |
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Ag2S quantum dots |
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A silicon has been the chief technological semiconducting material of modern microelectronics and has had a strong influence on all aspects of society. Applications of Si-based optoelectronic devices are limited to the visible and near infrared ranges. The expansion of the Si absorption to shorter wavelengths of the infrared range is of considerable interest to optoelectronic applications. By creating impurity states in Si it is possible to cause sub-band gap photon absorption. Here, we present an elegant and effective technology of extending the photoresponse of towards the IR range. Our approach is based on the use of Ag 2 S quantum dots (QDs) planted on the surface of Si. The specific sensitivity of the Ag 2 S/Si heterostructure is 10 11 cm√HzW -1 at 1.55μm. Our findings open a path towards the future study and development of Si detectors for technological applications. |
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2162-2035 |
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978-1-5386-8285-2 |
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8874267 |
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1286 |
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