Title:
TRANSPORT PROPERTIES OF THE STRONGLY CORRELATED SYSTEMS
Authors:
T.Domanski, M.Krawiec, M.Michalik, K.I.Wysokinski
(Institute of Physics,
M. Curie Sklodowska University, 20-031 Lublin, Poland)
The transport properties of various systems are studied here in the context of three different models. These are:
We calculate the density of states, specific heat, the Wilson ratio and conductivity of the correlated binary alloy with off-diagonal disorder. We investigate the conditions under which the Kondo peak appears in the density of states and in the conductance of a dot coupled to the external superconducting leads. We analyze the effect of the pseudogap on the optical spectra in the high temperature superconductors described by the boson-fermion model.
- the disordered Hubbard model applicable to correlated binary alloys with a general disorder,
- the Anderson model used in describing the Kondo physics of a quantum dot connected to the external superconducting leads, and
- the Ranninger-Robaszkiewicz model applied to the study of optical properties of the system with preformed electron pairs above the temperature of transition to the superconducting state.
Key words: coherent potential approximation, slave bosons,
non-equilibrium transport, quantum dot, continuous transformation,
pseudogap
PACS: 71.10.-w, 72.10.-d, 73.23.-b, 74.20.-z
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