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Казаков, А. Ю.; Кардакова, А. И.; Селиверстов, С. В.; Горшков, К. Н.; Дивочий, А. В.; Финкель, М. И.; Корнеев, А. А.; Вахтомин, Ю. Б. |
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Title |
Возможность применения сверхпроводниковых материалов в качестве отражающего покрытия холодного зеркала телескопа субмиллиметрового диапазона |
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Journal Article |
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Year |
2012 |
Publication |
Совр. проб. науки и обр. |
Abbreviated Journal |
Совр. проб. науки и обр. |
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3 |
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1-5 |
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radio telescope, superconducting coating |
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russian |
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2070-7428 |
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УДК 520.272.2 |
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RPLAB @ sasha @ казаковвозможность |
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1030 |
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Смирнов, А. В.; Карманцов, М. С.; Смирнов, К. В.; Вахтомин, Ю. Б.; Мастеров, Д. В.; Тархов, М. А.; Павлов, С. А.; Парафин, А. Е. |
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Title |
Терагерцовый отклик болометров на основе тонких пленок YBCO |
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Journal Article |
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Year |
2012 |
Publication |
ЖТФ |
Abbreviated Journal |
ЖТФ |
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Volume |
82 |
Issue |
12 |
Pages |
108-111 |
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Keywords |
YBCO HEB NEP |
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Abstract |
Представлены первые результаты измерения болометрического отклика высокотемпературных сверхпроводниковых детекторов на основе тонких пленок YBCO на электромагнитное излучение с частотой 2.5 THz. Минимальное значение оптической мощности, эквивалентной шуму созданных детекторов, составило 3.5· 10-9 W/sqrt(Hz)sqrt. Обсуждена возможность дальнейшего увеличения чувствительности исследуемых детекторов. |
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Russian |
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no |
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1825 |
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Pentin, I. V.; Smirnov, A. V.; Ryabchun, S. A.; Ozhegov, R. V.; Gol’tsman, G. N.; Vaks, V. L.; Pripolzin, S. I.; Pavel’ev, D. G.; Koshurinov, Y. I.; Ivanov, A. S. |
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Title |
Semiconducting superlattice as a solid-state terahertz local oscillator for NbN hot-electron bolometer mixers |
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Journal Article |
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Year |
2012 |
Publication |
Tech. Phys. |
Abbreviated Journal |
Tech. Phys. |
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Volume |
57 |
Issue |
7 |
Pages |
971-974 |
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Keywords |
semiconducting superlattice frequency multiplier, NbN HEB mixers |
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Abstract |
We present the results of our studies of the semiconducting superlattice (SSL) frequency multiplier and its application as part of the solid state local oscillator (LO) in the terahertz heterodyne receiver based on a NbN hot-electron bolometer (HEB) mixer. We show that the SSL output power level increases as the ambient temperature is lowered to 4.2 K, the standard HEB operation temperature. |
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1063-7842 |
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no |
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1378 |
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Smirnov, A. V.; Karmantsov, M. S.; Smirnov, K. V.; Vakhtomin, Y. B.; Masterov, D. V.; Tarkhov, M. A.; Pavlov, S. A.; Parafin, A. E. |
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Title |
Terahertz response of thin-film YBCO bolometers |
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Journal Article |
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Year |
2012 |
Publication |
Tech. Phys. |
Abbreviated Journal |
Tech. Phys. |
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Volume |
57 |
Issue |
12 |
Pages |
1716-1719 |
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Keywords |
YBCO HEB |
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Abstract |
The bolometric response of high-temperature thin-film YBCO superconducting detectors to an electromagnetic radiation with a frequency of 2.5 THz is measured for the first time. The minimum value of the noise-equivalent power of the detectors is 3.5 × 10−9 W/Hz−−−√. The feasibility of further increasing the sensitivity of the detectors is discussed. |
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1063-7842 |
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1817 |
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Semenov, A. V.; Devyatov, I. A.; Korneev, A. A.; Smirnov, K. V.; Goltsman, G. N.; Melnikov, A. P. |
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Title |
Derivation of expression for thermodynamic potential of “dirty” superconductor |
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Journal Article |
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Year |
2012 |
Publication |
Rus. J. Radio Electron. |
Abbreviated Journal |
Rus. J. Radio Electron. |
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4 |
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Keywords |
dirty superconductor, Usadel theory, thermodynamic potential |
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Abstract |
We derive a formula for thermodynamic potential of dirty superconductor which express it via isotropic quasiclassical Green functions of Usadel theory. Our result allows unify description of dynamic processes and fluctuations in superconducting nano-electronic devices. |
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Russian |
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7 pages |
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1824 |
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