2005/02/10 by Marie-Bernadette Lepetit
Physics and Astronomy · #cond-mat.str-el
published as Recent Research Developments in Quantum Chemistry 3 (2002) 143
arxiv created 2005/02/10 · arxiv updated 2009/12/01
The present paper reviews recent achievements on the ab initio determination of effective model Hamiltonians aimed at the description of strongly correlated materials. These models (Heisenberg, t-J, extended Hubbard, Kondo, etc) are crucial to solid state physicists for the description and understanding of the electronic remarkable properties such as magnetic orders, photo-induced magnetism, transport properties, high t_c super conductivity, etc. We will see how the association and the control of embedding techniques, fragment spectroscopy, effective or intermediate Hamiltonian theories, provides a systematic and well controlled method for the determination of trustworthy models Hamiltonians.