3 papers
cond-mat.str-el2005
Delocalization in Tight-Binding Hamiltonians: A Modified Coupled-Cluster Based Investigation
Arnaud Boullanger, Vincent Robert
The nature of delocalization in a 1D system ruled by a tight-binding Hamiltonian is investigated. Using a local evaluation of the ground state energy, it is shown that the range of…
cond-mat.str-el2003
Environment effects on effective magnetic exchange integrals and local spectroscopy of extended strongly correlated systems
Marie-Bernadette Lepetit, Nicolas Suaud, Alain Gelle +1
The present work analyzes the importance of the different components of the environment effects on the local spectroscopy of extended strongly correlated systems. It has been found…
cond-mat.str-el2003
Magnetic ligands in the compound
Marie-Bernadette Lepetit, Vincent Robert
We report a reinterpretation of the electronic structure of the compound, based on {\em ab initio} embedded fragment calculations. Our major results are the follow…