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Gershenzon E, Goltsman G, Elantev A, Kagane M. Energy-spectrum of small donors and acceptors in germanium and effect of magnetic-field on it. In: Izv. Akad. Nauk SSSR, Seriya Fizicheskaya. Vol 42.; 1978. p. 1142–8.
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Gershenzon E, Goltsman G, Orlov L, Ptitsina N. Population of excited-states of small admixtures in germanium. In: Izv. Akad. Nauk SSSR, Seriya Fizicheskaya. Vol 42. Mezhdunarodnaya Kniga 39 Dimitrova Ul., 113095 Moscow, Russia; 1978. p. 1154–9.
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Blagosklonskaya LE, Gershenzon EM, Goltsman GN, Elantev AI. Effect of strong magnetic-field on spectrum of hydrogen-like admixtures in semiconductors. In: Izv. Akad. Nauk SSSR, Seriya Fizicheskaya. Vol 42. Mezhdunarodnaya Kniga 39 Dimitrova Ul., 113095 Moscow, Russia; 1978. p. 1231–4.
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Gershenzon EM, Goltsman GN, Orlov L. Investigation of population and ionization of donor excited states in Ge. In: Physics of Semiconductors. North-Holland Publishing Co.; 1976. p. 631–4.
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Gershenzon EM, Goltsman GN, Ptitsyna NG. Investigation of excited donor states in GaAs. Sov Phys Semicond. 1974;7(10):1248–50.
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Goltsman G. Simple method for stabilizing power of submillimetric spectrometer. Pribory i Tekhnika Eksperimenta. 1972;(1):136.
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Gershenzon EM, Goltsman G, Orlova S, Ptitsina N, Gurvich Y. Germanium hot-electron narrow-band detector. Sov Radio Engineering And Electronic Physics. 1971;16(8):1346.
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Averkin AS, Shishkin AG, Chichkov VI, Voronov BM, Goltsman GN, Karpov A, et al. Tunable frequency-selective surface based on superconducting split-ring resonators. In: 8th Metamaterials.; 2014.
Abstract: We study a possibility to use the 2D superconducting metamaterial as a tunable frequency-selective surface (FSS). The proposed FSS is made of sub-wavelength size (l/14) metamaterial unit cells, where a split-ring resonator is embedded in a small iris aperture in a metal plane. The split-ring resonator is made of NbN film, and its resonance frequency is tuned by the temperature of the sample, changing the kinetic inductance of NbN film. The Ansoft HFSS simulation predicts the FSS tuning range of about 10-20 %. The developed superconducting FSS may be used as a tunable band-pass filter or modulator.
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Baeva EM, Titova NA, Veyrat L, Sacépé B, Semenov AV, Goltsman GN, et al. Thermal relaxation in metal films limited by diffuson lattice excitations of amorphous substrates. Phys Rev Applied. 2021;15(5):054014.
Abstract: We examine the role of a silicon-based amorphous insulating substrate in the thermal relaxation in thin NbN, InOx, and Au/Ni films at temperatures above 5 K. The samples studied consist of metal bridges on an amorphous insulating layer lying on or suspended above a crystalline substrate. Noise thermometry is used to measure the electron temperature Te of the films as a function of Joule power per unit area P2D. In all samples, we observe a P2D∝Tne dependence, with exponent n≃2, which is inconsistent with both electron-phonon coupling and Kapitza thermal resistance. In suspended samples, the functional dependence of P2D(Te) on the length of the amorphous insulating layer is consistent with the linear temperature dependence of the thermal conductivity, which is related to lattice excitations (diffusons) for a phonon mean free path shorter than the dominant phonon wavelength. Our findings are important for understanding the operation of devices embedded in amorphous dielectrics.
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Shcherbatenko M, Elezov M, Manova N, Sedykh K, Korneev A, Korneeva Y, et al. Single-pixel camera with a large-area microstrip superconducting single photon detector on a multimode fiber. Appl Phys Lett. 2021;118(18):181103.
Abstract: High sensitivity imaging at the level of single photons is an invaluable tool in many areas, ranging from microscopy to astronomy. However, development of single-photon sensitive detectors with high spatial resolution is very non-trivial. Here we employ the single-pixel imaging approach and demonstrate a proof-of-principle single-pixel single-photon imaging setup. We overcome the problem of low light gathering efficiency by developing a large-area microstrip superconducting single photon detector coupled to a multi-mode optical fiber interface. We show that the setup operates well in the visible and near infrared spectrum, and is able to capture images at the single-photon level.
We thank Philipp Zolotov and Pavel Morozov for NbN film fabrication, ARC coating, and fiber coupling of the detector. We also thank Swabian Instruments GmbH and Dr. Helmut Fedder personally for the kindly provided experimental equipment (Time Tagger Ultra 8). The work in the part of SNSPD research and development was supported by the Russian Foundation for Basic Research Project No. 18-29-20100. The work in the part of the optical setup and imaging was supported by Russian Foundation for Basic Research Project No. 20-32-51004.
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