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Optical characterization of rocksalt Pb1-xSnxTe alloys
Dept of Materials Science and Engineering, Royal Institute of Technology, Sweden.
Linköping University, Department of Physics, Chemistry and Biology, Applied Optics . Linköping University, The Institute of Technology.ORCID iD: 0000-0001-9229-2028
Linköping University, Department of Physics, Chemistry and Biology, Applied Optics . Linköping University, The Institute of Technology.
Instituto Nacional de Pesquisas Espaciais, Brazil.
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2008 (English)In: physica status solidi (a): Applications and Materials Science, ISSN 1862-6300, Vol. 205, no 4, 837-840 p.Article in journal (Refereed) Published
Abstract [en]

The optical properties in terms of dielectric function ε(hSω)= ε1(hSω)+iε2(hSω)of rocksalt pb 1-xsnx Te alloyes (0≤x≤1)are investigated experimentally by spectroscopic ellipsometry and theoretically by first-principles electronic band structure calculation. We find a strong optical response in the 0.5-2.0 eV region arising from optical absorption around the LW-line of the Brillouin zone. The response peak of the imaginary part of the dielectric functions at E = 1.6-1.8 eV shifts towards lower energies for high Sn compositions as a consequence of narrower W-point band-gap Eg(W) for the Sn-rich alloys, ©2008 WILEY-VCH Verlag GmbH & Co. KGaA.

Place, publisher, year, edition, pages
Weinheim, Germany: Wiley-VCH Verlagsgesellschaft, 2008. Vol. 205, no 4, 837-840 p.
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Natural Sciences
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URN: urn:nbn:se:liu:diva-42731DOI: 10.1002/pssa.200777747ISI: 000255702600028Local ID: 68443OAI: oai:DiVA.org:liu-42731DiVA: diva2:263588
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2014-02-03Bibliographically approved

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Arwin, Hans

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