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Mostrando ítems 1-7 de 7
Artículo
First-principles periodic calculation of four-body spin terms in high-Tc cuprate superconductors
(American Physical Society, 2006)
A general mapping between the energy of pertinent magnetic solutions and the diagonal terms of the spin Hamiltonian in a local representation provides the first general framework to extract accurate values for the many ...
Artículo
Local character of magnetic coupling in ionic solids
(American Physical Society, 1999)
Magnetic interactions in ionic solids are studied using parameter-free methods designed to provide accurate energy differences associated with quantum states defining the Heisenberg constant J. For a series of ionic solids ...
Artículo
Surface model and exchange-correlation functional effects on the description of Pd/α-Al2O3(0001)
(AIP Publishing, 2002-01)
The interaction of Pd with the Al-terminated α-Al2O3(0001) surface has been investigated using an embedded cluster model and periodic-supercell approaches. Furthermore, several treatments of electronic exchange and correlation ...
Artículo
On the difficulties of present theoretical models to predict the oxidation state of atomic Au adsorbed on regular sites of CeO2(111)
(AIP Publishing, 2009-09)
The electronic structure and oxidation state of atomic Au adsorbed on a perfect CeO2(111) surface have been investigated in detail by means of periodic density functional theory-based calculations, using the LDA+U and GGA+U ...
Artículo
Artículo
Origin of the vibrational shift of CO chemisorbed on Pt(111)
(American Institute of Physics Publising LLC, 1995)
Ab initio self-consistent field and complete active space self-consistent field cluster-model wave functions have been obtained for a CO-Pt4 cluster model simulating the atop interaction of CO on Pt(111). The origin of the ...
Artículo
Interaction of Pd with α-Al2O3(0001): A case study of modeling the metal-oxide interface on complex substrates
(American Physical Society, 2002)
The Pd/α-Al2O3(0001) interface at low Pd coverage has been studied by a variety of theoretical methods and models at this metal-oxide interface. All results are consistent and predict a noticeable interaction dominated by ...