Electronic structure of nanopolycrystalline pulsed laser deposited LaB6 films and single crystals: The boron perspective

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DOIResolve DOI: http://doi.org/10.1063/1.3284935
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TypeArticle
Journal titleJournal of Applied Physics
ISSN0021-8979
Volume107
Issue4
Pages043703-1043703-6
Subjectx-ray absorbtion near edge structure; pulsed laser deposition; single crystals; density functional theory; thin film structure
AbstractWe report an investigation of the electronic structure of LaB6 nanopolycrystalline pulsed laser deposited(PLD)film and single crystal with x-ray absorption near edge structures(XANES) spectroscopy at the B K-edge. The experimental results are compared with theoretical calculations using density functional theory, and real space multiple scattering. It is found that (i) the LaB6PLDfilm is of high quality and metallic albeit it is a polycrystalline phase of nanocrystallites and (ii) the B K-edge XANES for the single crystal specimens exhibit well defined spectral features corresponding to the theoretical partial densities of states of B p character and the threshold energy is relatively low and free electronlike, revealing its metallic character. The implications of these observations to the enhancement in electron emission from the PLDfilms are discussed.
Publication date
LanguageEnglish
AffiliationNRC Industrial Materials Institute; National Research Council Canada
Peer reviewedYes
NPARC number21276001
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Record identifier4e1a1338-5c4c-441d-8d5c-e9fbb28fe1b6
Record created2015-09-04
Record modified2016-05-09
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