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Gershenzon, E. M.; Gol'tsman, G. N.; Ptitsina, N. G. |
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Title |
Observation of the free-exciton spectrum at submillimeter wavelengths |
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1972 |
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JETP Lett. |
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JETP Lett. |
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16 |
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4 |
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161-162 |
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Ge, energy spectrum, free excitons |
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1736 |
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Gershenzon, E. M.; Gurvich, Y. A.; Orlova, S. L.; Ptitsina, N. G. |
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Title |
Scattering of electrons by charged impurities in Ge under cyclotron resonance conditions |
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Journal Article |
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Year |
1976 |
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Presumably: Sov. Phys. Semicond. | Физика и техника полупроводников |
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Presumably: Sov. Phys. Semicond. | Физика и техника полупроводников |
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10 |
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1379-1383 |
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Ge, cyclotron resonance, charged impurities, |
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1772 |
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Bondarenko, O. I.; Gershenzon, E. M.; Gurvich, Y. A.; Orlova, S. L.; Ptitsina, N. G. |
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Title |
Measurement of the width of the cyclotron resonance line of n-type Ge in quantizing magnetic fields |
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Journal Article |
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1972 |
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Presumably: Sov. Phys. Semicond. | Физика и техника полупроводников |
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Presumably: Sov. Phys. Semicond. | Физика и техника полупроводников |
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6 |
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362-363 |
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Ge, cyclotron resonance, quantizing magnetic fields |
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1774 |
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Varyukhin, S. V.; Zakharov, A. A.; Gershenzon, E. M.; Gol'tsman, G. N.; Ptitsina, N. G.; Chulkova, G. M. |
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Title |
Low energy excitation in La2CuO4 |
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1990 |
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Sverkhprovodimost': Fizika, Khimiya, Tekhnika |
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Sverkhprovodimost': Fizika, Khimiya, Tekhnika |
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3 |
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5 |
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832-837 |
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metal-dielectric-La2CuO4, monocrystals |
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Measurements of transmission and photoconductivity spectra in submillimeter wave length range as well as of capacity C and conductivity G in the region of acoustic frequencies of metal-dielectric-La2CuO4 system at low temperatures are performed using La2CuO4 monocrystals. Optical spectra posses a threshold character, a sharp decrease of transmission and photocoductivity signal occurs in the energy region hν>1.5 MeV. C(ω,T) and G(ω, T) dependences have a universal form typical of Debye type relaxation processes. Relaxation time dependence is of thermoactivated character τ(T)∼exp(ξ/T) with the gap value ξ≅2 meV. It is assumed that excitations with characteristic energy of ∼2 meV exist in La2CuO4. A possible nature of the detected low-energy excitations is discussed. |
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1688 |
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Karasik, B. S.; Il'in, K. S.; Ptitsina, N. G.; Gol'tsman, G. N.; Gershenzon, E. M.; Pechen', E. V.; Krasnosvobodtsev, S. I. |
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Title |
Electron-phonon scattering rate in impure NbC films |
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1998 |
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NASA/ADS |
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NASA/ADS |
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Y35.08 |
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NbC films |
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The study of the electron-phonon interaction in thin (20 nm) NbC films with electron mean free path l=2-13 nm gives an evidence that electron scattering is significantly modified due to the interference between electron-phonon and elastic electron scattering from impurities. The interference ~T^2-term, which is proportional to the residual resistivity, dominates over the Bloch-Grüneisen contribution to resistivity at low temperatures up to 60 K. The electron energy relaxation rate is directly measured via the relaxation of hot electrons heated by modulated electromagnetic radiation. In the temperature range 1.5 – 10 K the relaxation rate shows a weak dependence on the electron mean free path and strong temperature dependence T^n with the exponent n = 2.5-3. This behaviour is well explained by the theory of the electron-phonon-impurity interference taking into account the electron coupling with transverse phonons determined from the resistivity data. |
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American Physical Society, Annual March Meeting, March 16-20, 1998 Los Angeles, CA |
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1591 |
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