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Linear mean free path and quadratic temperature dependence of electron-phonon scattering rate in V82
alloys at low temperature
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We have reported a comprehensive study on temperature and disorder dependence of inelastic electron dephasing
scattering rate in disordered V82
18-xFex alloys. The dephasing
scattering time has been measured by analysis of low field magnetoresistance using the weak localization theory. In absence of magnetic field the variation of low temperature
resistivity rise follows the relation
, which is well described by three-dimensional electron-electron interactions. The temperature-independent
dephasing rate strongly depends on disorder and follows the relation
, where le
is the electron elastic mean free path. The inelastic electron-phonon scattering rate obeying the anomalous relation
. This anomalous behavior of
cannot be explained in terms of current theories for electron-phonon scattering in impure dirty conductors.
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