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Author |
Sergeev, A.; Mitin, V. |
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Title |
Electron-phonon interaction in disordered conductors: Static and vibrating scattering potentials |
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Journal Article |
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Year |
2000 |
Publication |
Phys. Rev. B. |
Abbreviated Journal |
Phys. Rev. B. |
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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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Author |
Smolyaninov, I. I.; Zayats, A. V.; Stanishevsky, A.; Davis, C. C. |
![goto web page (via DOI) doi](img/doi.gif)
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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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Year |
2002 |
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Phys. Rev. B |
Abbreviated Journal |
Phys. Rev. B |
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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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Author |
Su, M. Y.; Carter, S. G.; Sherwin, M. S. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Strong-field terahertz optical mixing in excitons |
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Journal Article |
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Year |
2003 |
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Phys. Rev. B |
Abbreviated Journal |
Phys. Rev. B |
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67 |
Issue |
12 |
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optical mixing |
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500 |
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Author |
Ciulin, V.; Carter, S. G.; Sherwin, M. S. |
![goto web page (via DOI) doi](img/doi.gif)
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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 |
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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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1098-0121 |
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501 |
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Author |
Shah, Jagdeep; Pinczuk, A.; Gossard, A. C.; Wiegmann, W. |
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Title |
Energy-loss rates for hot electrons and holes in GaAs quantum wells |
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Journal Article |
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Year |
1985 |
Publication |
Phys. Rev. Lett. |
Abbreviated Journal |
Phys. Rev. Lett. |
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Volume |
54 |
Issue |
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2045-2048 |
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Keywords |
2DEG, GaAs/AlGaAs, heat flow, electron-phonon, hole-phonon, carrier-phonon, interactions |
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Abstract |
We report the first direct determination of carrier-energy-loss rates in a semiconductor. These measurements provide fundamental insight into carrier-phonon interactions in semiconductors. Unexpectedly large differences are found in the energy-loss rates for electrons and holes in GaAs/AlGaAs quantum wells. This large difference results from an anomalously low electron-energy-loss rate, which we attribute to the presence of nonequilibrium optical phonons rather than the effects of reduced dimensionality or dynamic screening. |
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633 |
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