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Ab-initio study of disorder broadening of core photoemission spectra in random metallic alloys
Linköping University, The Department of Physics, Chemistry and Biology.
2004 (English)Independent thesis Basic level (professional degree)Student thesis
Abstract [en]

Ab-initio results of the core-level shift and the distribution about the average for the 3d5/2 electrons of Ag, Pd and 2p3/2 of Cu are presented for the face-centered-cubic AgPd and CuPd random alloys. The complete screening model, which includes both initial and final states effects in the same scheme, has been used in the investigations.

The alloys have been modeled with a supercell containing 256 atoms. Density-functional theory calculations are carried out using the locally self consistent Green's function approach.

Results from the calculations clearly shows that the core-level shift distributions characteristic is Gaussian, but the components reveals a substantial difference in the FWHM (Full-Width at Half-Maximum). Comparison between the experimental and the calculated broadening shows a remarkable agreement.

Place, publisher, year, edition, pages
Institutionen för fysik, kemi och biologi , 2004.
Keyword [en]
Theoretical physics, Density-Functional Theory, Core-Level Shift, Random Alloy, Coherent Potential Approximation, Supercell, Local Interaction Zone
Keyword [sv]
Teoretisk fysik
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:liu:diva-2580ISRN: LITH-IFM-EX--04/1329--SEOAI: oai:DiVA.org:liu-2580DiVA: diva2:19915
Uppsok
fysik/kemi/matematik
Available from: 2004-10-19 Created: 2004-10-19

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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf