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Author Aksaev, E. E.; Gershenzon, E. M.; Gol'tsman, G. N.; Semenov, A. D.; Sergeev, A. V. url  openurl
  Title (up) Interaction of electrons with thermal phonons in YBa2Cu3O7-δ films at low temperatures Type Journal Article
  Year 1989 Publication JETP Lett. Abbreviated Journal JETP Lett.  
  Volume 50 Issue 5 Pages 283-286  
  Keywords YBCO HTS films  
  Abstract 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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  Notes Approved no  
  Call Number Serial 1690  
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Author Gershenzon, E. M.; Orlova, S. L.; Orlov, L. A.; Ptitsina, N. G.; Rabinovich, R. I. url  openurl
  Title (up) Intervalley cyclotron-impurity resonance of electrons in n-Ge Type Journal Article
  Year 1976 Publication JETP Lett. Abbreviated Journal JETP Lett.  
  Volume 24 Issue 3 Pages 125-128  
  Keywords n-Ge, cyclotron-impurity resonance  
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  Area Expedition Conference  
  Notes Approved no  
  Call Number Serial 1730  
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Author Gershenzon, E. M.; Gol'tsman, G. N.; Ptitsina, N. G. url  openurl
  Title (up) Investigation of free excitons in Ge and their condensation at submillimeter wavelengths Type Journal Article
  Year 1976 Publication Sov. Phys. JETP Abbreviated Journal Sov. Phys. JETP  
  Volume 43 Issue 1 Pages 116-122  
  Keywords Ge, free excitons  
  Abstract 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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  Notes Approved no  
  Call Number Serial 1731  
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Author Gershenzon, E. M.; Gol'tsman, G. N.; Multanovskii, V. V.; Ptitsina, N. G. url  openurl
  Title (up) Kinetics of electron and hole binding into excitons in germanium Type Journal Article
  Year 1983 Publication Sov. Phys. JETP Abbreviated Journal Sov. Phys. JETP  
  Volume 57 Issue 2 Pages 369-376  
  Keywords Ge, electron and hole binding  
  Abstract 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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  Notes Approved no  
  Call Number Serial 1711  
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Author Gershenzon, E. M.; Gershenzon, M. E.; Gol'tsman, G. N.; Karasik, B. S.; Semenov, A. D.; Sergeev, A. V. url  openurl
  Title (up) Light-induced heating of electrons and the time of the inelastic electron-phonon scattering in the YBaCuO compound Type Journal Article
  Year 1987 Publication JETP Lett. Abbreviated Journal JETP Lett.  
  Volume 46 Issue 6 Pages 285-287  
  Keywords YBCO HTS HEB  
  Abstract 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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  Notes Approved no  
  Call Number Serial 1706  
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Author Mel’nikov, A. P.; Gurvich, Y. A.; Shestakov, L. N.; Gershenzon, E. M. url  doi
openurl 
  Title (up) Magnetic field effects on the nonohmic impurity conduction of uncompensated crystalline silicon Type Journal Article
  Year 2001 Publication Jetp Lett. Abbreviated Journal Jetp Lett.  
  Volume 73 Issue 1 Pages 44-47  
  Keywords uncompensated crystalline silicon, nonohmic impurity conduction, magnetic field  
  Abstract 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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  Series Editor Series Title Abbreviated Series Title  
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  ISSN 0021-3640 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number Serial 1752  
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Author Gershenzon, E. M.; Gol'tsman, G. N.; Karasik, B. S.; Semenov, A. D. url  openurl
  Title (up) Measurement of the energy gap in the compound YBaCu3O9-δ on the basis of the IR absorption spectrum Type Journal Article
  Year 1987 Publication JETP Lett. Abbreviated Journal JETP Lett.  
  Volume 46 Issue 5 Pages 237-238  
  Keywords YBCO HTS detectors  
  Abstract 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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  Notes Approved no  
  Call Number Serial 1703  
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Author Gershenzon, E. M.; Gershenzon, M. E.; Gol'tsman, G. N.; Semenov, A. D.; Sergeev, A. V. url  openurl
  Title (up) Nonselective effect of electromagnetic radiation on a superconducting film in the resistive state Type Journal Article
  Year 1982 Publication JETP Lett. Abbreviated Journal JETP Lett.  
  Volume 36 Issue 7 Pages 296-299  
  Keywords HEB  
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  Notes Неселективное воздействие электромагнитного излучения на сверхпроводящую пленку в резистивном состоянии Approved no  
  Call Number Serial 1717  
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Author Gershenzon, E. M.; Gol'tsman, G. N.; Ptitsina, N. G. url  openurl
  Title (up) Observation of the free-exciton spectrum at submillimeter wavelengths Type Journal Article
  Year 1972 Publication JETP Lett. Abbreviated Journal JETP Lett.  
  Volume 16 Issue 4 Pages 161-162  
  Keywords Ge, energy spectrum, free excitons  
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  Area Expedition Conference  
  Notes Approved no  
  Call Number Serial 1736  
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Author Gershenzon, E. M.; Gol'tsman, G. N.; Ptitsina, N. G. url  openurl
  Title (up) Population and lifetime of excited states of shallow impurities in Ge Type Journal Article
  Year 1979 Publication Sov. Phys. JETP Abbreviated Journal Sov. Phys. JETP  
  Volume 49 Issue 2 Pages 355-362  
  Keywords Ge, photothermal ionization, shallow impurities  
  Abstract 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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  Area Expedition Conference  
  Notes Approved no  
  Call Number Serial 1719  
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