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Kostiuk, T.; Spears, D. |
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Title |
30 μm heterodyne receiver |
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Journal Article |
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1987 |
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Int. J. Infrared and Millimeter Waves |
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8 |
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10 |
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1269-1279 |
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HgCdTe detector mixer |
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235 |
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Author |
Uchiki, Hisao; Kobayashi, Takayoshi; Sakaki, Hiroyuki |
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Title |
Photoluminescence and energyâ€loss rates in GaAs quantum wells under highâ€density excitation |
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Journal Article |
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Year |
1987 |
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J. Appl. Phys. |
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62 |
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3 |
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1010-1016 |
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2DEG, GaAs/AlGaAs, heat flow, electron-phonon, hole-phonon, carrier-phonon, interactions |
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The timeâ€resolved luminescence spectra from excited conduction subbands in three samples of multiâ€quantumâ€well GaAs/AlxGa1-xAs (x=0.3 and 1) semiconductors with several well widths and barrier heights were obtained under highâ€density excitations by a 30â€ps pulsed laser at 532 nm, which generated electron–hole pairs to the concentration of 1010–1013/cm2 per well per pulse at 77 K. The temperature and the Fermi energy of electron were determined by fitting best the constructed timeâ€resolved spectrum to the observed, and the timeâ€dependent electron energy was obtained by using these parameters. The energyâ€loss rates of hot electrons are at least twice smaller than the calculated ones induced by the electronâ€polar phonon scattering, including the screening effect due to the high carrier density. |
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635 |
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Santhanam, P.; Wind, S.; Prober, D. E. |
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Title |
Localization, superconducting fluctuations, and superconductivity in thin films and narrow wires of aluminum |
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Journal Article |
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Year |
1987 |
Publication |
Phys. Rev. B |
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Phys. Rev. B |
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35 |
Issue |
7 |
Pages |
3188-3206 |
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Al films; electron-phonon scattering; electron-electron scattering; Disordered structures; amorphous and glassy solids, Relaxation times and mean free paths, Galvanomagnetic and other magnetotransport effects |
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We report a comprehensive set of experiments on wide and narrow thin-film strips of aluminum which test the predictions of recent localization theory. The experiments on wide films in the two-dimensional regime confirm the theoretical predictions and also yield insight into inelastic mechanisms and spin-orbit scattering rates. Our extension of the existing theory for one-dimensional systems to include spin-orbit scattering and Maki-Thompson superconducting fluctuations is verified by the experiments. We find clear evidence for one-dimensional localization, with inferred inelastic rates identical to those in two-dimensional films. The prediction of the localization theory for a dimensional crossover from two-dimensional to one-dimensional behavior is also confirmed. We have reanalyzed the results of some previous experiments on thin films and narrow wires in light of these results. |
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RPLAB @ gujma @ |
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757 |
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Title |
ГОСТ 2.119-73. ЕСКД. Эскизный проект |
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Book Whole |
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1987 |
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gost, detproj |
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867 |
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Author |
Gurevich, A. Vl.; Mints, R. G. |
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Title |
Self-heating in normal metals and superconductors |
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1987 |
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Rev. Mod. Phys. |
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59 |
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4 |
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941-1000 |
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HEB, Joule self-heating effect |
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This review is devoted to the physics of current-carrying superconductors and normal metals having two or more stable states sustained by Joule self-heating. The creation, propagation, and localization of electrothermal domains and switching waves leading to the transition from one stable state to another in uniform and nonuniform samples are treated in detail. The connection between thermal bistability and hysteresis, dropping and stepped current-voltage characteristics, self-induced oscillations of current and voltage, selfreplication of electrothermal domains, and the formation of periodic and stochastic resistive structures are considered. |
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917 |
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