Europhys. Lett.
Volume 67, Number 2, July 2004
Page(s) 226 - 232
Section Interdisciplinary physics and related areas of science and technology
Published online 01 July 2004
Europhys. Lett., 67 (2) , pp. 226-232 (2004)
DOI: 10.1209/epl/i2004-10112-y

Temperature-dependent transport of correlated disordered electrons: Elastic vs. inelastic scattering

M. C. O. Aguiar1, 2, E. Miranda2, V. Dobrosavljevic1, E. Abrahams3 and G. Kotliar3

1  Department of Physics and National High Magnetic Field Laboratory Florida State University - Tallahassee, FL 32306, USA
2  Instituto de Física Gleb Wataghin, Unicamp - C.P. 6165 Campinas, SP 13083-970, Brazil
3  Center for Materials Theory, Serin Physics Laboratory, Rutgers University 136 Frelinghuysen Road, Piscataway, NJ 08854, USA

(Received 15 March 2004; accepted 7 May 2004)

Temperature-dependent transport of disordered electronic systems is examined in the presence of strong correlations. In contrast to what is assumed in Fermi-liquid approaches, finite-temperature behavior in this regime proves largely dominated by inelastic electron-electron scattering. This conclusion is valid in the strong-coupling limit, where the disorder, the correlations and the Fermi energy are all comparable, as in many materials near the metal-insulator transition.

71.10.Fd - Lattice fermion models (Hubbard model, etc.).
72.10.-d - Theory of electronic transport; scattering mechanisms.
71.30.+h - Metal-insulator transitions and other electronic transitions.

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