Conductivity of the disordered Anderson model

0384314 - FZÚ 2013 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Pokorný, Vladislav - Janiš, Václav
Conductivity of the disordered Anderson model.
Lectures on the Physics of Strongly Correlated Systems XVI. Melville, NY: AIP, 2012 - (Avella, A.; Mancini, F.), s. 307-311. American Institute of Physics Conference Proceedings, 1485. ISBN 978-0-7354-1097-8. ISSN 0094-243X.
[Training Course in the Physics of Strongly Correlated Systems /16./. Vietri sul Mare (IT), 03.10.2011-14.10.2011]
Výzkumný záměr: CEZ:AV0Z10100520
Klíčová slova: scattering on impurities * electrical conductivity * vertex corrections
Kód oboru RIV: BE - Teoretická fyzika
http://proceedings.aip.org/resource/2/apcpcs/1485/1/307_1

We propose a renormalization scheme of the Kubo formula for the electrical conductivity with multiple backscatterings contributing to the electron-hole irreducible vertex. The asymptotic limit to high spatial dimensions is used to determine this vertex via a symmetrized Bethe-Salpeter equation in momentum space. We further utilize the dominance of a pole in the irreducible vertex to an approximate diagonalization of the Bethe-Salpeter equation and to represent the zero temperature electrical conductivity non-perturbatively without the necessity to separate the mean-field Drude term and vertex corrections.
Trvalý link: http://hdl.handle.net/11104/0214010