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Sergeev, A.; Mitin, V. |
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Electron-phonon interaction in disordered conductors: Static and vibrating scattering potentials |
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Journal Article |
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Year |
2000 |
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Phys. Rev. B. |
Abbreviated Journal |
Phys. Rev. B. |
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Volume |
61 |
Issue |
9 |
Pages |
6041-6047 |
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Keywords |
disordered conductors, scattering potential, electron-phonon interaction |
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Abstract |
Employing the Keldysh diagram technique, we calculate the electron-phonon energy relaxation rate in a conductor with the vibrating and static δ-correlated random electron-scattering potentials. If the scattering potential is completely dragged by phonons, this model yields the Schmid’s result for the inelastic electron-scattering rate τ−1e−ph. At low temperatures the effective interaction decreases due to disorder, and τ−1e−ph∝T4l (l is the electron mean-free path). In the presense of the static potential, quantum interference of numerous scattering processes drastically changes the effective electron-phonon interaction. In particular, at low temperatures the interaction increases, and τ−1e−ph∝T2/l. Along with an enhancement of the interaction, which is observed in disordered metallic films and semiconducting structures at low temperatures, the suggested model allows us to explain the strong sensitivity of the electron relaxation rate to the microscopic quality of a particular film. |
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0163-1829 |
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307 |
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Shytov, A. V.; Levitov, L. S.; Beenakker, C. W. J. |
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Title |
Electromechanical noise in a diffusive conductor |
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Journal Article |
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Year |
2002 |
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Phys. Rev. Lett. |
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Phys. Rev. Lett. |
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Volume |
88 |
Issue |
22 |
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Electrons moving in a conductor can transfer momentum to the lattice via collisions with impurities and boundaries, giving rise to a fluctuating mechanical stress tensor. The root-mean-squared momentum transfer per scattering event in a disordered metal (of dimension L greater than the mean free path l and screening length xi) is found to be reduced below the Fermi momentum by a factor of order l/L for shear fluctuations and (xi/L)^2 for pressure fluctuations. The excitation of an elastic bending mode by the shear fluctuations is estimated to fall within current experimental sensitivity for a nanomechanical oscillator. |
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0031-9007 |
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RPLAB @ s @ |
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433 |
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Smolyaninov, I. I.; Zayats, A. V.; Stanishevsky, A.; Davis, C. C. |
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Title |
Optical control of photon tunneling through an array of nanometer-scale cylindrical channels |
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Journal Article |
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2002 |
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Phys. Rev. B |
Abbreviated Journal |
Phys. Rev. B |
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Volume |
66 |
Issue |
20 |
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205414_1-205414_5 |
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optical mixing |
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1098-0121 |
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499 |
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Su, M. Y.; Carter, S. G.; Sherwin, M. S. |
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Title |
Strong-field terahertz optical mixing in excitons |
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Journal Article |
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2003 |
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Phys. Rev. B |
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Phys. Rev. B |
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67 |
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12 |
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optical mixing |
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1098-0121 |
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500 |
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Ciulin, V.; Carter, S. G.; Sherwin, M. S. |
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Title |
Terahertz optical mixing in biased GaAs single quantum wells |
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Journal Article |
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2004 |
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Phys. Rev. B |
Abbreviated Journal |
Phys. Rev. B |
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70 |
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11 |
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115312-(1-6) |
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optical mixing |
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