TECHNIQUES FOR THE STUDY OF THE ELECTRONIC PROPERTIES.

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The electronic structure of a solid is affected by size and altered from the continuous electronic levels forming a band, characteristic of bulk or microsized solids, to discrete-like or quantized levels. This is drastically observed when the particle size goes down to the nano-meter range and is the origin of the so-called ''quantum confinement'' terminology referring to this phenomenon. From a solid state point of view, electronic states of confined materials can be considered as being a superposition of bulk-like states with a concomitant increase of the oscillator strength. The valence/conduction band-width and position observables of a solid oxide are ... continued below

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29 pages

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FERNANDEZ-GARCIA, M. & RODRIGUEZ, J.A. June 30, 2006.

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Description

The electronic structure of a solid is affected by size and altered from the continuous electronic levels forming a band, characteristic of bulk or microsized solids, to discrete-like or quantized levels. This is drastically observed when the particle size goes down to the nano-meter range and is the origin of the so-called ''quantum confinement'' terminology referring to this phenomenon. From a solid state point of view, electronic states of confined materials can be considered as being a superposition of bulk-like states with a concomitant increase of the oscillator strength. The valence/conduction band-width and position observables of a solid oxide are functions of the crystal potential and this, in turn, is perturbed by effect of the size in two ways; a short-range effect induced by the presence of ions with a different coordination number and bond distance, and a large-range one, induced by changes in the Madelung potential of the oxide. Theoretical analyses for oxides show a redistribution of charge when going from large periodic structures to small clusters which is roughly considered small for ionic solids and significantly important for covalent ones. Chapter 1 of this book describes the most recent theoretical frameworks employed to deal with these physical phenomena while here we will describe their influence in physico-chemical observables obtained by spectroscopical techniques.

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29 pages

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  • Report No.: BNL--76858-2006-BC
  • Grant Number: DE-AC02-98CH10886
  • DOI: 10.2172/893009 | External Link
  • Office of Scientific & Technical Information Report Number: 893009
  • Archival Resource Key: ark:/67531/metadc882705

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Office of Scientific & Technical Information Technical Reports

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  • June 30, 2006

Added to The UNT Digital Library

  • Sept. 21, 2016, 2:29 a.m.

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  • Dec. 12, 2016, 8:18 p.m.

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FERNANDEZ-GARCIA, M. & RODRIGUEZ, J.A. TECHNIQUES FOR THE STUDY OF THE ELECTRONIC PROPERTIES., report, June 30, 2006; [Upton, New York]. (digital.library.unt.edu/ark:/67531/metadc882705/: accessed May 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.