University of Minnesota
School of Physics & Astronomy

Physics and Astronomy Calendar

Monday, October 16th 2017
Speaker: Prof Oded Agam, Hebrew University Jerusalem,
Subject: Saturation of strong electron-electron umklapp scattering at high temperature.
Please note change of time, room and day for the seminar, this week only.

It is usually believed that in clean metals, at finite temperature, the electron-electron umklapp scattering is proportional to the inelastic scattering rate, 1/\tau_{ee}. In this talk it will be shown that, for three dimensional systems, when \hbar/\tau_{ee} is of order or larger than the band splitting energy, the umklapp scattering rate saturates to a value which is independent of both \tau_{ee} and the temperature, T. This phenomenon sheds new light on the old problem of the resistivity saturation at high temperature.

Faculty Host: Alex Kamenev

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