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The electronic chemical potential as a basis for a cluster model approximation for intercalation of Li in 1T - TiS2 model approximation for intercalation of Li in 1T - TiS2

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1994-06-13
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Mendizábal Emaldía, Fernando
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The electronic chemical potential as a basis for a cluster model approximation for intercalation of Li in 1T - TiS2 model approximation for intercalation of Li in 1T - TiS2
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Author
  • Mendizábal Emaldía, Fernando;
  • Contreras Ramos, Renato;
  • Aizman, Arie;
Abstract
The representation of the electronic structure of intercalated 1T - TiS2 with lithium by a cluster approximation is giscussed. The electronic chemical potential, defined in the context of density functional theory, is used as a criterion to determine the minimal units that retain the major electronic properties of the actual solid. The results indicate that a ~tructure containing 3-4 hexagonal unit cells of TiS2, with an octahedral coordination around the transition m~tal, is good enough to reproduce the major features of the electronic structure of the infinite layered solido Analysis of the valence and conducting bands shows good qualitative agreement with band theory calculations. A partial electron ~ansfer from Li to the lattice is predicted, in good agreement with experimental NMR data for this system.
Patrocinador
This work was supported by FONDECYT under contract numbers: 1940348 and 2940003. Fernando Mendizabal is a Foundation Andes fellow
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URI: https://repositorio.uchile.cl/handle/2250/119390
ISSN: 0I66-1280
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Journal of Molecular Structure (Theochem) 335, 161-166, 1995
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