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Gershenzon, E. M.; Gol'tsman, G. N.; Semenov, A. D.; Sergeev, A. V. |
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Title |
Mechanism of picosecond response of granular YBaCuO films to electromagnetic radiation |
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Journal Article |
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Year |
1990 |
Publication |
Solid State Communications |
Abbreviated Journal |
Solid State Communications |
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Volume |
76 |
Issue |
4 |
Pages |
493-497 |
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Keywords |
YBCO HTS detectors |
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Abstract |
The ultrafast mechanisms of radiation detection in granular YBaCuO films are studied in the wide wavelength range from millimeter to near infrared. With the rise of radiation frequency the Josephson detection at the grain boundary weak links is replaced by electron heating into the grains. This change occurs in the submillimeter wavelength range. Electron-phonon relaxation time τeph is determined by direct measurements and analyses quasistationary electron heating. Temperature dependence of τeph at T ≤ 40 K was found to be τeph ∼ T−1. The results show that detectors with the response time of few picoseconds at nitrogen temperature are attainable. |
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0038-1098 |
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1685 |
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Author |
Gershenzon, E. M.; Gol’tsman, G. N.; Semenov, A. D.; Sergeev, A. V. |
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Title |
Mechanism of picosecond response of granular YBaCuO films to electromagnetic radiation |
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Journal Article |
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Year |
1991 |
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IEEE Trans. Magn. |
Abbreviated Journal |
IEEE Trans. Magn. |
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Volume |
27 |
Issue |
2 |
Pages |
1321-1324 |
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Keywords |
YBCO HTS detectors |
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Abstract |
Ultrafast mechanisms of radiation detection in granular YBaCuO films are studied in the wide wavelength range from millimeter waves to near infrared. With an increase in radiation frequency, the Josephson detection at the grain-boundary weak links is replaced by electron heating into the grains. This change occurs in the submillimeter wavelength range. The electron-phonon relaxation time tau /sub eph/ is determined from direct measurements, quasi-stationary electron heating measurements, and the frequency dependence of the current at which maximum voltage shift is observed. The temperature dependence of tau /sub eph/ at T<or=40 K was found to be tau /sub eph/ approximately T/sup -1/. The results show that detectors with a response time of a few picoseconds at nitrogen temperature are attainable. |
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1941-0069 |
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1679 |
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Author |
Gershenzon, E. M.; Gol’tsman, G. N.; Sergeev, A.; Semenov, A. D. |
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Title |
Picosecond response of YBaCuO films to electromagnetic radiation |
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Conference Article |
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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 |
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Pages |
457-462 |
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Keywords |
YBCO HTS detectors |
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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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Gorzkowski, W.; Gutowski, M.; Reich, A.; Szymczak, H. |
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European Conference , Ustroń, Poland , 30 Sept – 4 Oct 1989 |
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1695 |
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Author |
Gershenzon, E.; Gershenzon, M. E.; Gol'tsman, G. N.; Semenov, A. D.; Sergeev, A. V. |
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Title |
Heating of quasiparticles in a superconducting film in the resistive state |
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Year |
1981 |
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JETP Lett. |
Abbreviated Journal |
JETP Lett. |
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34 |
Issue |
5 |
Pages |
268-271 |
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1716 |
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Author |
Gol’tsman, G. N.; Semenov, A. D.; Sergeev, A. V.; Aksaev, E. E.; Gogidze, I. G.; Gershenzon, E. M. |
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Title |
Electron-phonon interaction in thin YBaCuO films and fast detectors |
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Conference Article |
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1993 |
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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 |
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112 |
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184-185 |
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Keywords |
YBCO HTS detectors |
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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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Meissner, M.; Pohl, R. O. |
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Seventh International Conference, Cornell University, Ithaca, New York, August 3-7, 1992 |
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Call Number |
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1662 |
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