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Aksaev, E. E.; Gershenzon, E. M.; Gol'tsman, G. N.; Semenov, A. D.; Sergeev, A. V. |
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Title ![sorted by Title field, ascending order (up)](https://db.rplab.ru/refbase/img/sort_asc.gif) |
Interaction of electrons with thermal phonons in YBa2Cu3O7-δ films at low temperatures |
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Journal Article |
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Year |
1989 |
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JETP Lett. |
Abbreviated Journal |
JETP Lett. |
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Volume |
50 |
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5 |
Pages |
283-286 |
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YBCO HTS films |
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The time of electron-phonon interaction tau(eph) in YBaCuO films at low temperatures is studied. This is measured as the time of resistance relaxation in the resistive state of the superconducter, and is also determined from the increase in resistance under the action of radiation. Consistent results of these methods show that resistance relaxation in the resistive state is caused by cooling of the electron subsystem with respect to the phonon subsystem. The time tau(eph) is found to be inversely proportional to the temperature and comes to 80 ps when T = 1.6 K and 5 ps when T = 30 K. 6 refs. |
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1690 |
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Gershenzon, E. M.; Orlova, S. L.; Orlov, L. A.; Ptitsina, N. G.; Rabinovich, R. I. |
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Title ![sorted by Title field, ascending order (up)](https://db.rplab.ru/refbase/img/sort_asc.gif) |
Intervalley cyclotron-impurity resonance of electrons in n-Ge |
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Journal Article |
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Year |
1976 |
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JETP Lett. |
Abbreviated Journal |
JETP Lett. |
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Volume |
24 |
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3 |
Pages |
125-128 |
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Keywords |
n-Ge, cyclotron-impurity resonance |
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1730 |
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Gershenzon, E. M.; Gol'tsman, G. N.; Ptitsina, N. G. |
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Title ![sorted by Title field, ascending order (up)](https://db.rplab.ru/refbase/img/sort_asc.gif) |
Investigation of free excitons in Ge and their condensation at submillimeter wavelengths |
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Journal Article |
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Year |
1976 |
Publication |
Sov. Phys. JETP |
Abbreviated Journal |
Sov. Phys. JETP |
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Volume |
43 |
Issue |
1 |
Pages |
116-122 |
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Keywords |
Ge, free excitons |
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Results are presented of an investigation of free excitons in Ge in the submillimeter wavelength range for low as well as for high excitation levels when interaction between the excitons becomes important. The free-exciton energy spectrum is discussed. It is shown that the drop radii and their concentrations can be determined by measuring the temperature dependence of the free-exciton concentration. A section of the phase diagram is obtained in the 0.5-2.8 K temperature range for the free excitons+condensate system. |
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1731 |
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Gershenzon, E. M.; Gol'tsman, G. N.; Multanovskii, V. V.; Ptitsina, N. G. |
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Title ![sorted by Title field, ascending order (up)](https://db.rplab.ru/refbase/img/sort_asc.gif) |
Kinetics of electron and hole binding into excitons in germanium |
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Journal Article |
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1983 |
Publication |
Sov. Phys. JETP |
Abbreviated Journal |
Sov. Phys. JETP |
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Volume |
57 |
Issue |
2 |
Pages |
369-376 |
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Keywords |
Ge, electron and hole binding |
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The kinetics of binding of free carriers'into excitons under stationary and nonstationary conditions is studied by investigating the submillimeter photoconductivity of Ge in a wide range of temperatures and of excitation levels. It is shown that the absolute values and the temperature dependence of the binding cross section (o- T-'.' ) can be satisfactorily described by the cascade recombination theory. The value of o and its temperature dependence differ significantly from the cross sections, measured in the same manner, for capture by attracting small impurities. Under nonstationary conditions, just as in the case of recombination with shallow impurities, a signifi- cant role is played by the sticking of the carriers in highly excited states. |
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1711 |
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Gershenzon, E. M.; Gershenzon, M. E.; Gol'tsman, G. N.; Karasik, B. S.; Semenov, A. D.; Sergeev, A. V. |
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Title ![sorted by Title field, ascending order (up)](https://db.rplab.ru/refbase/img/sort_asc.gif) |
Light-induced heating of electrons and the time of the inelastic electron-phonon scattering in the YBaCuO compound |
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Journal Article |
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Year |
1987 |
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JETP Lett. |
Abbreviated Journal |
JETP Lett. |
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46 |
Issue |
6 |
Pages |
285-287 |
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Keywords |
YBCO HTS HEB |
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For the first time, measurements have been made on the electron energy relaxation time due to the electron--phonon interaction in films of the YBaCuO superconductor. The results indicate a significant intensification of the electron--phonon interaction in this compound as compared with normal superconducting metals. |
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1706 |
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Author |
Mel’nikov, A. P.; Gurvich, Y. A.; Shestakov, L. N.; Gershenzon, E. M. |
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Title ![sorted by Title field, ascending order (up)](https://db.rplab.ru/refbase/img/sort_asc.gif) |
Magnetic field effects on the nonohmic impurity conduction of uncompensated crystalline silicon |
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Journal Article |
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2001 |
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Jetp Lett. |
Abbreviated Journal |
Jetp Lett. |
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Volume |
73 |
Issue |
1 |
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44-47 |
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Keywords |
uncompensated crystalline silicon, nonohmic impurity conduction, magnetic field |
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The impurity conduction of a series of crystalline silicon samples with the concentration of major impurity N ≈ 3 × 1016 cm−3 and with a varied, but very small, compensation K was measured as a function of the electric field E in various magnetic fields H-σ(H, E). It was found that, at K < 10−3 and in moderate E, where these samples are characterized by a negative nonohmicity (dσ(0, E)/dE < 0), the ratio σ(H, E)/σ(0, E) > 1 (negative magnetoresistance). With increasing E, these inequalities are simultaneously reversed (positive nonohmicity and positive magnetoresistance). It is suggested that both negative and positive nonohmicities are due to electron transitions in electric fields from impurity ground states to states in the Mott-Hubbard gap. |
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0021-3640 |
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1752 |
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Gershenzon, E. M.; Gol'tsman, G. N.; Karasik, B. S.; Semenov, A. D. |
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Title ![sorted by Title field, ascending order (up)](https://db.rplab.ru/refbase/img/sort_asc.gif) |
Measurement of the energy gap in the compound YBaCu3O9-δ on the basis of the IR absorption spectrum |
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Journal Article |
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1987 |
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JETP Lett. |
Abbreviated Journal |
JETP Lett. |
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46 |
Issue |
5 |
Pages |
237-238 |
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Keywords |
YBCO HTS detectors |
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For the first time the long-wave infrared absorption spectrum has been measured by means of the bolometric effect and energy gap for high-temperature superconducting ceramics YBa/sub 2/Cu/sub 3/O/sub 9-delta/ has been determined from absorption threshold. 2delta/kT/sub c/ value is equal to 0.6. |
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1703 |
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Gershenzon, E. M.; Gershenzon, M. E.; Gol'tsman, G. N.; Semenov, A. D.; Sergeev, A. V. |
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Title ![sorted by Title field, ascending order (up)](https://db.rplab.ru/refbase/img/sort_asc.gif) |
Nonselective effect of electromagnetic radiation on a superconducting film in the resistive state |
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Journal Article |
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1982 |
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JETP Lett. |
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JETP Lett. |
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36 |
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7 |
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296-299 |
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HEB |
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Неселективное воздействие электромагнитного излучения на сверхпроводящую пленку в резистивном состоянии |
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1717 |
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Gershenzon, E. M.; Gol'tsman, G. N.; Ptitsina, N. G. |
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Title ![sorted by Title field, ascending order (up)](https://db.rplab.ru/refbase/img/sort_asc.gif) |
Observation of the free-exciton spectrum at submillimeter wavelengths |
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Journal Article |
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1972 |
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JETP Lett. |
Abbreviated Journal |
JETP Lett. |
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16 |
Issue |
4 |
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161-162 |
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Keywords |
Ge, energy spectrum, free excitons |
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1736 |
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Gershenzon, E. M.; Gol'tsman, G. N.; Ptitsina, N. G. |
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Title ![sorted by Title field, ascending order (up)](https://db.rplab.ru/refbase/img/sort_asc.gif) |
Population and lifetime of excited states of shallow impurities in Ge |
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Journal Article |
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1979 |
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Sov. Phys. JETP |
Abbreviated Journal |
Sov. Phys. JETP |
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49 |
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2 |
Pages |
355-362 |
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Ge, photothermal ionization, shallow impurities |
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An investigation was made of the dependences of the intensities of photothermal ionization lines of excited states of shallow impurities in Ge on the intensity of impurity-absorbed background radiation and on temperature. The results obtained were used to find the density and lifetime of carriers of lower excited states of the impurity centers. The lifetimes of the excited states of donors in Ge were 10-~-10-" sec and the lifetime of the lower excited state of acceptors was -lo-' sec. In the presence of background radiation the population of the excited states was very different from the equilibrium value and, in particular, a population inversion of the 2pk, state relative to the 3p0 and 3s states was observed. |
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1719 |
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