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Author Gershenzon, E. M.; Gol'tsman, G. N.
Title Hot-electron superconducting mixers Type Conference Article
Year 1993 Publication Proc. SPIE Abbreviated Journal Proc. SPIE
Volume 2104 Issue Pages 329-330
Keywords
Abstract The creation of low noise heterodyne receivers for frequencies above 1 THz is in the urgentneed for radio astronomy, laser spectroscopy, plasma diagnostic, etc. In this paper we discussthe nonlinear effect related to hot electrons in superconductors, and their potential use in lownoise submilimeter wave mixer. We also discuss results achieved so far as well as possible futuredevelopments.
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Publisher SPIE Place of Publication Editor Birch, J.R.; Parker, T.J.
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Area Expedition Conference 18th International Conference on Infrared and Millimeter Waves
Notes Approved no
Call Number Serial 1654
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Author Gershenzon, E. M.; Gol'tsman, G. N.
Title Hot electron superconductive mixers Type Conference Article
Year 1993 Publication Proc. 4th Int. Symp. Space Terahertz Technol. Abbreviated Journal Proc. 4th Int. Symp. Space Terahertz Technol.
Volume Issue Pages 618-622
Keywords HEB mixers
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Area Expedition Conference
Notes Approved no
Call Number Serial 1656
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Author Gol'tsman, G. N.; Elant'iev, A. I.; Karasik, B. S.; Gershenzon, E. M.
Title Antenna – coupled superconducting electron-heating bolometer Type Conference Article
Year 1993 Publication Proc. 4th Int. Symp. Space Terahertz Technol. Abbreviated Journal Proc. 4th Int. Symp. Space Terahertz Technol.
Volume Issue Pages 623-628
Keywords HEB
Abstract We propose a novel antenna-coupled superconducting bolometer based on electron-heating in the resistive state. A short narrow ultrathin super- conducting film strip (sized approximately 4x1x0.01 pm 3 ), which is in good thermal contact with the thermostat, serves as a resistive load for infrared or submillimeter current. In contrast to conventional isothermal super- conducting bolometers electron-heating ones can have a higher sensitivity which grows when filni. thickness is reduced. Response time of electron- heating bolometer does not depend on heat transfer from the film to the enviroment. To calculate the sensitivity (NEP), we have used experimental data on wideband Al, Nb and NbN bolometers which have the same un- derlying physical mechanism. The bolom.eters have been made in the form of a structure composed of a number of long narrow strips. The values of for Al, NEP have been found to be 1.5 . 113 -16 1 140 -15 ) and 2 . 10 – 14werT,-1/2 – Nb and NbN respectively. In the paper, the prospects are also discussed of improving the picosecond YBaCuO detector, developed recently. NEP value of the detector, if combined with a microantenna, can reach the order of 10- •ilz-v2.
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Area Expedition Conference
Notes Approved no
Call Number Serial 1657
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Author Gol’tsman, G. N.; Semenov, A. D.; Sergeev, A. V.; Aksaev, E. E.; Gogidze, I. G.; Gershenzon, E. M.
Title Electron-phonon interaction in thin YBaCuO films and fast detectors Type Conference Article
Year 1993 Publication Phonon Scattering in Condensed Matter VII. Springer Series in Solid-State Sciences Abbreviated Journal Phonon Scattering in Condensed Matter VII. Springer Series in Solid-State Sciences
Volume 112 Issue Pages 184-185
Keywords YBCO HTS detectors
Abstract The thin. YBaCuO film response to laser and submillimeter radiation demonstrates the picosecond nonequilibrium peak on the nanosecond bolometric background. Experimental data give an evidence for the spectral dependence of picosecond photoresponse probably due to a poor efficiency of electron multiplication processes. Presented results prove an availability of fast YBaCuO thin film detector.
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Publisher Place of Publication Editor Meissner, M.; Pohl, R. O.
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Area Expedition Conference Seventh International Conference, Cornell University, Ithaca, New York, August 3-7, 1992
Notes Approved no
Call Number Serial 1662
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Author Heusinger, M. A.; Nebosis,R. S.; Schatz, W.; Renk, K. F.; Gol’tsman, G. N.; Karasik, B. S.; Semenov, A. D.; Gershenzon, E. M.
Title Temperature dependence of bolometric and non-bolometric photoresponse of a structured YBa2Cu3O7-δ thin film Type Conference Article
Year 1993 Publication Phonon Scattering in Condensed Matter VII. Springer Series in Solid-State Sciences Abbreviated Journal Phonon Scattering in Condensed Matter VII. Springer Series in Solid-State Sciences
Volume 112 Issue Pages 193-195
Keywords YBCO HTS detectors
Abstract We investigated the temperature dependence of the transient voltage photoresponse of a current biased structured YBa2Cu3O7−δ thin film in its transition temperature region, around 79 K. Both, picosecond nonbolometric and nanosecond bolometric response to ultrashort far-infrared laser pulses were found for frequencies between 25 cm−1 and 215 cm−1. We will discuss optimum conditions for radiation detection and present an analysis of the dynamical behaviour of excited high T c thin films.
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Publisher Place of Publication Editor Meissner, M.; Pohl, R. O.
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Area Expedition Conference Seventh International Conference, Cornell University, Ithaca, New York, August 3-7, 1992
Notes Approved no
Call Number Serial 1663
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Author Sergeev, A. V.; Livanov, D. V.
Title Phonon renormalization of thermoelectric power of high-Tc materials Type Conference Article
Year 1993 Publication Phonon Scattering in Condensed Matter VII. Springer Series in Solid-State Sciences Abbreviated Journal Phonon Scattering in Condensed Matter VII. Springer Series in Solid-State Sciences
Volume 112 Issue Pages 204-205
Keywords HTS, YBCO
Abstract Renormalization of thermoelectric power due to Nielsen — Taylor effect (interference between electron-phonon and electron- impurity interactions) is used for the explanation of the temperature dependence and sign of the thermopower in high-Tc materials. In the framework of the model the negative sign of TEP of untwinned YBa2Cu3O7−x crystal in a-direction observed by Howson et. al. is connected to the strong hole scattering via O-vacancies in chains.
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Corporate Author Thesis
Publisher Place of Publication Editor Meissner, M.; Pohl, R. O.
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Area Expedition Conference Seventh International Conference, Cornell University, Ithaca, New York, August 3-7, 1992
Notes Approved no
Call Number Serial 1664
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Author Sergeev, A. V.; Aksaev, E. E.; Gogidze, I. G.; Gol’tsman, G. N.; Semenov, A. D.; Gershenzon, E. M.
Title Thermal boundary resistance at YBaCuO film-substrate interface Type Conference Article
Year 1993 Publication Phonon Scattering in Condensed Matter VII. Springer Series in Solid-State Sciences Abbreviated Journal Phonon Scattering in Condensed Matter VII. Springer Series in Solid-State Sciences
Volume 112 Issue Pages 405-406
Keywords YBCO films
Abstract The nanosecond voltage response of YBaCuo films on Al2O3, MgO and ZrO2 substrates to electromagnetic radiation of millimeter and visible ranges has been investigated. The analysis of experimental conditions for Al2O3 and MgO substrates shows that the resistance change is monitored by the Kapitza boundary shift of temperature during the temporal interval ~ 100 ns limited by the time of phonon return from a substrate into a film. The observed exponential voltage decay is described by the phonon escape time which is proportional to the film thickness and is weakly temperature dependent.
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Corporate Author Thesis
Publisher Place of Publication Editor Meissner, M.; Pohl, R. O.
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Area Expedition Conference Seventh International Conference, Cornell University, Ithaca, New York, August 3-7, 1992
Notes Approved no
Call Number Serial 1665
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Author Gershenzon, E. M.; Gol'tsman, G. N.; Semenov, A. D.; Sergeev, A. V.
Title Heating of electrons in resistive state of superconducting films. Detectors, mixers and switches Type Conference Article
Year 1992 Publication Progress in High Temperature Superconductivity Abbreviated Journal Progress in High Temperature Superconductivity
Volume 32 Issue Pages 190-195
Keywords superconducting films, heating of electrons
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Area Expedition Conference International Conference on High Temperature Superconductivity and Localization Phenomena , Moscow, Russia , 11 – 15 May 1991
Notes https://books.google.co.kr/books?hl=en&lr=&id=uCI0DwAAQBAJ&oi=fnd&pg=PA190&ots=z7WGjXYWr4&sig=TQ6G6dKsmcj4faYe1ZLw_BFmps8 Approved no
Call Number Serial 1666
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Author Kollberg, Erik L.; Gershenzon, E.; Goltsman, G.; Yngvesson, K. S.
Title Hot electron mixers, the potential competition Type Conference Article
Year 1992 Publication Proc. ESA Symp. on Photon Detectors for Space Instrumentation Abbreviated Journal Proc. ESA Symp. on Photon Detectors for Space Instrumentation
Volume Issue Pages 201-206
Keywords HEB mixers
Abstract There is an urgent need in radio astronomy for low noise heterodyne receivers for frequencies above about 500 GHz. It is not certain that mixers based on superconducting quasiparticle tunnelling (SIS mixers) may turn out to be the answer to this need. In order to try to find an alternative way for realizing low noise heterodyne receivers for submillimeter waves, so called hot electron bolometric effects for mixing are now being investigated. Two basically different approaches are tried, one based on semiconductors and one on superconductors. Both methods are briefly discussed in this overview paper.
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Area Expedition Conference ESA Symposium on Photon Detectors for Space Instrumentation
Notes Approved no
Call Number Serial 1667
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Author Gershenzon, E. M.; Gol’tsman, G. N.; Sergeev, A.; Semenov, A. D.
Title Picosecond response of YBaCuO films to electromagnetic radiation Type Conference Article
Year 1990 Publication Proc. European Conf. High-Tc Thin Films and Single Crystals Abbreviated Journal Proc. European Conf. High-Tc Thin Films and Single Crystals
Volume Issue Pages 457-462
Keywords YBCO HTS detectors
Abstract Radiation-induced change of the resistance was studied in the resistive state of YBaCuO films. Electron-phonon relaxation time T h was determmed from direct ep measurements and analysis of quasistationary electron heating. Temperature dependence of That TS 40 K was found to – ep be T h.. T'. The resul ts show that ep detectors with the response time of few picosecond at nitrogen temperature can be realized.
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Publisher Place of Publication Editor Gorzkowski, W.; Gutowski, M.; Reich, A.; Szymczak, H.
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Area Expedition Conference European Conference , Ustroń, Poland , 30 Sept – 4 Oct 1989
Notes Approved no
Call Number Serial 1695
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