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Gershenzon, E. M.; Gershenson, M. E.; Goltsman, G. N.; Karasik, B. S.; Lyulkin, A. M.; Semenov, A. D. |
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Title |
Fast-response superconducting electron bolometer |
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Year  |
1989 |
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Pisma v Zhurnal Tekhnicheskoi Fiziki |
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Pisma v Zhurnal Tekhnicheskoi Fiziki |
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15 |
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3 |
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88-92 |
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Nb HEB |
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The general design, operation, and performance characteristics of fast-response electronic bolometers using a thin superconducting Nb film on a leucosapphire substrate are briefly reviewed. The volt-watt sensitivity of the bolometrs is 2,000-200,000 V/W, the operating temperature is 1.6 K, and the time constant is 4-4.5 ns. |
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Russian |
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1694 |
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Gershenzon, E. M.; Gershenson, M. E.; Goltsman, G. N.; Lyulkin, A. M.; Semenov, A. D.; Sergeev, A. V. |
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Title |
Limiting characteristics of fast-response superconducting bolometers |
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Journal Article |
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Year |
1989 |
Publication |
Zhurnal Tekhnicheskoi Fiziki |
Abbreviated Journal |
Zhurnal Tekhnicheskoi Fiziki |
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Volume |
59 |
Issue |
2 |
Pages |
11-120 |
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Keywords |
HEB |
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Теоретически и экспериментально исследовано физическое ограничение быстродействия сверхпроводящего болометра. Показано, что минимальная постоянная времени реализуется в условиях электронного разогрева и определяется процессом неупругого электрон-фонон-ного взаимодействия. Сформулированы требования к конструкции «электронного болометра» для достижения предельной чувствительности. Проведено сравнение характеристик электронного болометра и обычных болометров различных типов. |
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1696 |
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Банная, В. Ф.; Веселова, Л. И.; Гершензон, Е. М. |
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Title |
Особенности температурной зависимости холловской подвижности в легированных и некомпенсированных полупроводниках |
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1989 |
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Физика и техника полупроводников |
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Физика и техника полупроводников |
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23 |
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2 |
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338-345 |
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weakly compensated Si, Ge, doped, Hall mobility |
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На примере легированного и слабо компенсированного Si⟨B⟩ проведены исследования особенностей температурной зависимости подвижности при различных механизмах рассеяния. Уточнен метод определения концентрации компенсирующей примеси по μI(T). Полученные результаты обсуждаются и для Ge. |
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1758 |
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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 |
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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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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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Varyukhin, S. V.; Zakharov, A. A.; Gershenzon, E. M.; Gol'tsman, G. N.; Ptitsyna, N. G.; Chulkova, G. M. |
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Title |
AC losses and submillimeter absorption in single crystals La2CuO4 |
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Journal Article |
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Year |
1990 |
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Phys. B Condens. Mat. |
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Phys. B Condens. Mat. |
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165-166 |
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1269-1270 |
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metal-dielectric-La2Cu04 |
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The La2CuO4 single crystals were used to carry out the measurements of transmission spectra within the submillimeter range of wavelengths, as well as the capacitance C and conductivity G in the region of acoustic frequencies of the metal-dielectric-La2Cu04 system at low temperatures. The optical spectra display a threshold character. There takes place a sharp decreasing of transmission signal in the energy range of hυ>1.5meV. The C(ω,T) and G(ω,T) dependences have a universal form characteristic of relaxation processes of the Debye type. The relaxation time dependence displays a thermoactivation character τ(T)-exp(ξ/T) with a gap value of ξ≃2meV,coinciding with the optical one. It is assumed that there exist excitations with a characteristic energy ~ 2meV in La2Cu04.A possible nature of the revealed low-energy excitations is discussed. |
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0921-4526 |
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1686 |
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