Records |
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 |
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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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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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Serial |
1664 |
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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 |
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Pages |
329-330 |
Keywords |
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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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SPIE |
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Editor |
Birch, J.R.; Parker, T.J. |
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18th International Conference on Infrared and Millimeter Waves |
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Serial |
1654 |
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Author |
Maas, S. |
Title |
SIS mixers |
Type |
Conference Article |
Year |
1993 |
Publication |
Artech House |
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Volume |
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Issue |
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Pages |
338-340 |
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Boston, MA |
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Serial |
249 |
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Author |
Tonguz, O.K.; Hwang, B. |
Title |
Noise performance of AFC loops in optical heterodyne receivers |
Type |
Conference Article |
Year |
1993 |
Publication |
Proc. Lasers and Electro-Optics Society Annual Meeting |
Abbreviated Journal |
Proc. LEOS |
Volume |
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Issue |
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Pages |
361-362 |
Keywords |
optical mixing |
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Place of Publication |
San Jose, CA, USA |
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510 |
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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 |
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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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Editor |
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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Serial |
1665 |
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