Chemisorption with overcompleteness, nonorthogonality, and electron correlation: II. Largelimit
- 15 June 1976
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 13 (12), 5351-5361
- https://doi.org/10.1103/physrevb.13.5351
Abstract
The pseudo-Green's-function theory of hydrogen chemisorption, developed in a previous paper, is extended to treat the situation when the intra-atomic Coulomb repulsion on the adatom is very large, so that hydrogen chemisorbs in a magnetic configuration. The theory takes systematically into account the overcompleteness and nonorthogonality of wave functions describing the problem, and electron-electron interaction. The metaladsorbate system is described in terms of an overcomplete basis set consisting of the eigenstates (both occupied and unoccupied) of the metal and the occupied electronic state on the adatom. The overcompleteness problem is satisfactorily dealt with through the introduction of the pseudo Green's functions, and their equations of motion are worked out in detail. In the limit of a large intra-atomic Coulomb repulsion , there is an electronic spin localized on the adsorbed hydrogen atom. This is shown by rearranging the equations of motion of the pseudo Green's function in that case, so that they manifestly describe the scattering of metal electrons off of the localized spin. The physics of hydrogen chemisorption in this limit is discussed, and comparison is made with previous theoretical work.
Keywords
This publication has 18 references indexed in Scilit:
- Induced covalent bond theory of chemisorptionSurface Science, 1975
- Hydrogen chemisorption on transition-metal surfaces: Tungsten (100)Physical Review B, 1974
- Chemisorption with overcompleteness, nonorthogonality, and electron correlation: Nondegenerate ground statePhysical Review B, 1974
- Theory of ChemisorptionJournal of Vacuum Science and Technology, 1972
- Induced covalent bond mechanism of chemisorptionSurface Science, 1971
- The Approximate Expression of Green's Function for the Calculation of Electronic Structure in Metals and AlloysProgress of Theoretical Physics, 1969
- Self-Consistent Model of Hydrogen ChemisorptionPhysical Review B, 1969
- Self-Consistent Curie-Law Calculation for Anderson'S Dilute-Alloy ModelPhysical Review Letters, 1966
- Self-Consistent Treatment of Kondo's Effect in Dilute AlloysPhysical Review B, 1965
- Resistance Minimum in Dilute Magnetic AlloysProgress of Theoretical Physics, 1964