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Sergeev, A.; Karasik, B. S.; Ptitsina, N. G.; Chulkova, G. M.; Il'in, K. S.; Gershenzon, E. M. |
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Electron–phonon interaction in disordered conductors |
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Journal Article |
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1999 |
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Phys. Rev. B Condens. Matter |
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Phys. Rev. B Condens. Matter |
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263-264 |
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190-192 |
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disordered conductors, electron-phonon interaction |
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The electron–phonon interaction is strongly modified in conductors with a small value of the electron mean free path (impure metals, thin films). As a result, the temperature dependencies of both the inelastic electron scattering rate and resistivity differ significantly from those for pure bulk materials. Recent complex measurements have shown that modified dependencies are well described at K by the electron interaction with transverse phonons. At helium temperatures, available data are conflicting, and cannot be described by an universal model. |
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0921-4526 |
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1765 |
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Smirnov, K. V.; Ptitsina, N. G.; Vakhtomin, Y. B.; Verevkin, A. A.; Gol’tsman, G. N.; Gershenzon, E. M. |
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Title |
Energy relaxation of two-dimensional electrons in the quantum Hall effect regime |
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Journal Article |
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2000 |
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JETP Lett. |
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JETP Lett. |
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71 |
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1 |
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31-34 |
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2DEG, GaAs/AlGaAs heterostructures |
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The mm-wave spectroscopy with high temporal resolution is used to measure the energy relaxation times τe of 2D electrons in GaAs/AlGaAs heterostructures in magnetic fields B=0–4 T under quasi-equilibrium conditions at T=4.2 K. With increasing B, a considerable increase in τe from 0.9 to 25 ns is observed. For high B and low values of the filling factor ν, the energy relaxation rate τ −1e oscillates. The depth of these oscillations and the positions of maxima depend on the filling factor ν. For ν>5, the relaxation rate τ −1e is maximum when the Fermi level lies in the region of the localized states between the Landau levels. For lower values of ν, the relaxation rate is maximum at half-integer values of τ −1e when the Fermi level is coincident with the Landau level. The characteristic features of the dependence τ −1e (B) are explained by different contributions of the intralevel and interlevel electron-phonon transitions to the process of the energy relaxation of 2D electrons. |
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0021-3640 |
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http://jetpletters.ru/ps/899/article_13838.shtml (“Энергетическая релаксация двумерных электронов в области квантового эффекта Холла”) |
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1559 |
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Gershenzon, E. M.; Gol'tsman, G.; Ptitsina, N. G. |
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Title |
Energy spectrum of free excitons in germanium |
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1973 |
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JETP Lett. |
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JETP Lett. |
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18 |
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3 |
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93 |
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Ge, free excitons, energy spectrum |
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1734 |
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Voevodin, E. I.; Gershenzon, E. M.; Goltsman, G. N.; Ptitsina, N. G. |
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Energy-spectrum of shallow acceptors in Ge deformed strongly by a uniaxial pressure |
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1989 |
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Sov. Phys. and Technics of Semiconductors |
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Sov. Phys. and Technics of Semiconductors |
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23 |
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8 |
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843-846 |
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Ge, crystallography |
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Проведены исследования спектров фототермической ионизации мелких акцепторов (В, Аl) в Ge, предельно сжатом вдоль кристаллографической оси [100]. Из данных измерений с учетом теории построен энергетический спектр примесей. Показано, что энергии большого числа уровней четных и нечетных состояний хорошо соответствуют расчету, выполненному для примесей в анизотропном полупроводнике с параметром анизотропии γ=m∗⊥/m∗∥>1. |
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Энергетический спектр мелких акцепторов в сильно одноосно деформированном Ge |
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1692 |
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Verevkin, A. A.; Ptitsina, N. G.; Smirnov, K. V.; Gol'tsman, G. N.; Voronov, B. M.; Gershenzon, E. M.; Yngvesson, K. S. |
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Hot electron bolometer detectors and mixers based on a superconducting-two-dimensional electron gas-superconductor structure |
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1997 |
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Proc. 4-th Int. Semicond. Device Research Symp. |
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Proc. 4-th Int. Semicond. Device Research Symp. |
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163-166 |
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S-2DEG-S HEB mixers, detectors, AlGaAs/GaAs heterostructures, NbN |
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1603 |
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