In:
Modern Physics Letters B, World Scientific Pub Co Pte Ltd, Vol. 26, No. 24 ( 2012-09-20), p. 1230016-
Kurzfassung:
High-T c superconductors with CuO 2 layers, manganites La 1-x Sr x MnO 3 and cobaltites LaCoO 3 present several mysteries in their physical properties. Most of them are believed to come from the strongly-correlated nature of these materials. From the theoretical viewpoint, there are many hidden rocks in making the consistent description of the band structure and low-energy physics starting from the Fermi-liquid approach. Here, we discuss the alternative method — multielectron approach to the electronic structure calculations for the Mott insulators — called LDA + GTB (local density approximation + generalized tight-binding) method. Its origin is a straightforward generalization of the Hubbard perturbation theory in the atomic limit and the multiband p-d Hamiltonian with the parameters calculated within LDA. We briefly discuss the method and focus on its applications to cuprates, manganites and cobaltites.
Materialart:
Online-Ressource
ISSN:
0217-9849
,
1793-6640
DOI:
10.1142/S0217984912300165
Sprache:
Englisch
Verlag:
World Scientific Pub Co Pte Ltd
Publikationsdatum:
2012