TKM Institutsseminar |
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Vortragender: | Egor Kiselev |
Datum: | 16.01.2020 14:00 |
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Ort: | 10.1 |
Zugehörigkeit: | TKM, KIT |
Gastgeber: | Prof. Dr. Schmalian |
Abstract
It is shown that hydrodynamic collision processes in graphene at the neutrality point can be described in terms of a Fokker-Planck equation involving a fractional derivative. The phase space dynamics of electrons is governed by Lévy flights: rare large-angle scattering events interrupting the small-angle scattering. Lévy flights give rise to superdiffusive dynamics of collective excitations. Implications for transport and relaxation processes will be discussed.