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Author Sergeev, A.; Mitin, V.
Title Electron-phonon interaction in disordered conductors: Static and vibrating scattering potentials Type Journal Article
Year 2000 Publication Phys. Rev. B. Abbreviated Journal Phys. Rev. B.
Volume 61 Issue 9 Pages 6041-6047
Keywords disordered conductors, scattering potential, electron-phonon interaction
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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ISSN 0163-1829 ISBN Medium
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Notes Approved no
Call Number Serial 307
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Author Ganzevles, W. F. M.; Gao, J. R.; de Korte, P. A. J.; Klapwijk, T. M.
Title Direct response of microstrip line coupled Nb THz hot-electron bolometer mixers Type Journal Article
Year 2001 Publication Applied Physics Letters Abbreviated Journal Appl. Phys. Lett.
Volume 79 Issue 15 Pages 2483-2485
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ISSN 0003-6951 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number Serial 311
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Author Кардашев, Н. С.; Андреянов, В. В.; Буякас, В. И.; Виноградов, И. С.; Гвамичева, А. С.; Котик, А. И.; Курт, В. Г.; Лазарева, Г. С.; Миронова, Е. Н.; Мышонкова, Н. В.; Слыш, В. И.; Трубников, А. Г.; Троитский, В. Ф.; Пуряев, Д. Т.; Юсюкин, В. И.
Title Проект Миллиметрон Type Journal Article
Year 2000 Publication Труды ФИАН им. Лебедева Abbreviated Journal
Volume 228 Issue Pages
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Notes Approved no
Call Number RPLAB @ s @ MILLIMETRON_first_rus Serial 309
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Author Van Rudd, J.; Johnson, Jon L.; Mittleman, Daniel M.
Title Cross-polarized angular emission patterns from lens-coupled terahertz antennas Type Journal Article
Year 2001 Publication J. Opt. Soc. Am. B Abbreviated Journal
Volume 18 Issue 10 Pages 1524
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ISSN 0740-3224 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number Serial 475
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Author Kroug, M.; Cherednichenko, S.; Merkel, H.; Kollberg, E.; Voronov, B.; Gol'tsman, G.; Hübers, H. W.; Richter, H.
Title NbN hot electron bolometric mixers for terahertz receivers Type Journal Article
Year 2001 Publication IEEE Trans. Appl. Supercond. Abbreviated Journal IEEE Trans. Appl. Supercond.
Volume 11 Issue 1 Pages 962-965
Keywords NbN HEB mixers
Abstract Sensitivity and gain bandwidth measurements of phonon-cooled NbN superconducting hot-electron bolometer mixers are presented. The best receiver noise temperatures are: 700 K at 1.6 THz and 1100 K at 2.5 THz. Parylene as an antireflection coating on silicon has been investigated and used in the optics of the receiver. The dependence of the mixer gain bandwidth (GBW) on the bias voltage has been measured. Starting from low bias voltages, close to operating conditions yielding the lowest noise temperature, the GBW increases towards higher bias voltages, up to three times the initial value. The highest measured GBW is 9 GHz within the same bias range the noise temperature increases by a factor of two.
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Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
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ISSN ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number Serial 312
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