%0 Journal Article
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%@nexthigherunit 8JMKD3MGPCW/3ESR3H2
%@archivingpolicy denypublisher denyfinaldraft
%@issn 0022-0728
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%@resumeid 8JMKD3MGP5W/3C9JJ55
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%@usergroup marciana
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%3 metal insulator.pdf
%X The properties of a layer of metal atoms adsorbed on a metal electrode are investigated as a function of the coverage, focusing on metal-insulator transitions of the Mott-Hubbard type. For this purpose a model Hamiltonian is set up which incorporates the interaction of the adsorbate with the metal and with the solvent, and approximate solutions for the adsorbate Green's functions are derived. The presence of the solvent has a strong effect both on the onsite Coulomb repulsion and on the adsorbate-adsorbate interactions. Metallization requires both a finite density of states near the Fermi level and a mean free path for the electrons exceeding the lattice spacing. Explicit model calculations have been performed for a regular lattice of copper on Au(1 1 1). With increasing coverage, the adsorbate passes from an insulating to a conductive state, then back to an insulating phase before becoming conductive again near full coverage.
%8 Dec.
%N 1
%T Metal-insulator transition in a layer adsorbed on a metal electrode
%@secondarytype PRE PI
%K MATERIALS PHYSICS, Phase transitions, Adsorbate layers, Model Hamiltonian, Metallization, Underpotential deposition, FÍSICA DE MATERIAIS, Transição de fase, Metalização.
%@visibility shown
%@group
%@group LAS-INPE-MCT-BR
%@secondarykey INPE-11820-PRE/7173
%@copyholder SID/SCD
%2 sid.inpe.br/marciana/2004/12.14.09.22.02
%@affiliation Institute of Mathematical Sciences, CIT Campus
%@affiliation Instituto de Pesquisas Espaciais, Laboratorio Associado de Sensores e Materiais (INPE.LAS)
%@affiliation Abteilung Elektrochemie, University of Ulm
%@project MATCON: Física da matéria condensada
%B Journal of Electroanalytical Chemistry
%P 1-14
%4 sid.inpe.br/marciana/2004/12.14.09.22
%D 2004
%V 574
%A Mishra, A. K.,
%A Kishore, Ram,
%A Schmickler, W.,
%@dissemination WEBSCI; PORTALCAPES; COMPENDEX.
%@area FISMAT