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Author (up) Gershenzon, E. M.; Gol'tsman, G. N.; Multanovskii, V. V.; Ptitsina, N. G.
Title Cross section for binding of free carriers into excitons in germanium Type Journal Article
Year 1981 Publication JETP Lett. Abbreviated Journal JETP Lett.
Volume 33 Issue 11 Pages 574
Keywords Ge, excitons, photoconductivity
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Notes Approved no
Call Number Serial 1718
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Author (up) Gershenzon, E. M.; Gol'tsman, G. N.; Multanovskii, V. V.; Ptitsyna, N. G.
Title Capture of photoexcited carriers by shallow impurity centers in germanium Type Journal Article
Year 1979 Publication Sov. Phys. JETP Abbreviated Journal Sov. Phys. JETP
Volume 50 Issue 4 Pages 728-734
Keywords Ge, photoexcited carriers, shallow impurity centers
Abstract Measurements were made of the lifetimes rf of free carriers and the relaxation time 7, of the submillimeter impurity photoconductivity when carriers are captured by attracting shallow donors and acceptom in Ge. It is nod that in samples with capture-center concentration N,Z 10"cm-' the relaxation time 7, greatly exceeds rf in the temperature range 4.2-12 K. The measured values of 7,- are compared with the calculation of cascade recombination by the classical model. To evaluate the data on T,, the distinguishing features of this model are considered for the nonstationary case. The substantial difference betweea the values of rf and T, is attributed to re-emission of the carriers from the excited states of the shallow impurities.
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Notes Approved no
Call Number Serial 1720
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Author (up) Gershenzon, E. M.; Gol'tsman, G. N.; Potapov, V. D.; Sergeev, A. V.
Title Restriction of microwave enhancement of superconductivity in impure superconductors due to electron-electron interaction Type Journal Article
Year 1991 Publication Phys. B Condens. Mat. Abbreviated Journal Phys. B Condens. Mat.
Volume 169 Issue 1-4 Pages 629-630
Keywords impure superconductors
Abstract Transition from microwave enhancement of supercurrent to superconductivity suppression is investigated in impure superconductors. It is demonstrated that frequency range of enhancement effect narrows with the decrease of electron mean free path, ℓ, and at ℓ⩽1nm electron heating is observed in the whole frequency range. Dependences of frequency boundaries on ℓ are explained by taking into account strong electron-electron interaction in impure metals.
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ISSN 0921-4526 ISBN Medium
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Notes Approved no
Call Number Serial 1682
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Author (up) Gershenzon, E. M.; Gol'tsman, G. N.; Potapov, V. D.; Sergeev, A. V.
Title Restriction of microwave enhancement of superconductivity in impure superconductors due to electron-electron interaction Type Journal Article
Year 1990 Publication Solid State Communications Abbreviated Journal Solid State Communications
Volume 75 Issue 8 Pages 639-641
Keywords impure superconductors
Abstract Transition from microwave enhancement of supercurrent to superconductivity suppression is investigated in impure superconductors. It is demonstrated that the frequency range of the enhancement effect narrows with the decrease of the electron mean free path, l, and at l ⩽ 1 nm electron heating is observed in the whole frequency range. Dependences of frequency boundaries on l are explained by taking into account strong electron-electron interaction in impure metals.
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ISSN 0038-1098 ISBN Medium
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Notes Approved no
Call Number Serial 1687
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Author (up) Gershenzon, E. M.; Gol'tsman, G. N.; Ptitsina, N. G.
Title 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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Notes Approved no
Call Number Serial 1736
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