|
|
Sergeev A, Karasik BS, Ptitsina NG, Chulkova GM, Il'in KS, Gershenzon EM. Electron–phonon interaction in disordered conductors. Phys Rev B Condens Matter. 1999;263-264:190–2.
Abstract: 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.
|
|
|
|
Il'in KS, Karasik BS, Ptitsina NG, Sergeev AV, Gol'tsman GN, Gershenzon EM, et al. Electron-phonon-impurity interference in thin NbC films: electron inelastic scattering time and corrections to resistivity. In: Czech. J. Phys. Vol 46.; 1996. p. 857–8.
Abstract: Complex study of transport properties of impure NbC films with the electron mean free pathl=0.6–13 nm show the crucial role of the electron-phonon-impurity interference (EPII). In the temperature range 20–70 K we found the interference correction to resistivity proportional to T2 and to the residual resistivity of the film. Using the comprehensive theory of EPII, we determine the electron coupling with transverse phonons and calculate the electron inelastic scattering time. Direct measurements of the inelastic electron scattering time using a response to a high-frequency amplitude modulated cw radiation agree well with the theory.
|
|
|
|
Karasik BS, Il'in KS, Ptitsina NG, Gol'tsman GN, Gershenzon EM, Pechen' EV, et al. Electron-phonon scattering rate in impure NbC films [abstract]. In: NASA/ADS.; 1998. Y35.08.
Abstract: 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.
|
|
|
|
Elant'ev AI, Karasik BS. Effect of high-frequency current on Nb superconductive film in resistive state. Sov J Low Temp Phys. 1989;15(7):379–83.
|
|
|
|
Karasik BS, Il'in KS, Pechen EV, Krasnosvobodtsev SI. Diffusion cooling mechanism in a hot-electron NbC microbolometer mixer. Appl Phys Lett. 1996;68(16):2285–7.
|
|
