Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/14117
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dc.contributor.authorTarhan, Enver-
dc.contributor.authorRamdas, Anant K.-
dc.date.accessioned2024-01-06T07:21:24Z-
dc.date.available2024-01-06T07:21:24Z-
dc.date.issued2023-
dc.identifier.issn0031-8949-
dc.identifier.issn1402-4896-
dc.identifier.urihttps://doi.org/10.1088/1402-4896/acfea3-
dc.identifier.urihttps://hdl.handle.net/11147/14117-
dc.description.abstractStrong absorption peak observed near 350 cm-1 in the infrared spectrum of CdTe is assigned to a localized vibrational mode of 16O impurity atoms at tellurium sites. In this work, we studied the nature of these vibrations in terms of the effect of isotopic mass variations in the nearest neighbor Cd atoms. We showed that Cd atoms with 8 stable natural isotopes of varying abundances cause the observed line shape in the observed localized vibrational absorption peak. To calculate the effect of isotopic mass variations, we used the XY4 molecular model, X being the impurity atom at a host Te atom site and Y's are various isotopes of the host Cd atoms. Corresponding frequencies of local modes were calculated for each possible combinations of neighboring Cd atoms. For an XY4 molecule with Td symmetry, only the triply degenerate Gamma 5 mode is infrared active. The energies of this mode are higher than those of the others. This mode is possible only when all neigboring Cd atoms are the same isotope. To simulate the absorption data, we used a dynamical matrix approach where a force constant is given for each of the bending and stretching potential energy terms. By diagonalization of the dynamical matrix we were able to fit the calculated spectrum to the data with a proper choice of the bending and stretching force constants. A good agreement with the experiment as well as reported force constants for other impurities in CdTe is obtained.en_US
dc.description.sponsorshipWe would like to thank the National Science Foundation (Grant Nos. DMR-0102699 and ESC-0129853) for supporting the research reported this paper. [DMR-0102699, ESC-0129853]; National Science Foundationen_US
dc.description.sponsorshipWe would like to thank the National Science Foundation (Grant Nos. DMR-0102699 and ESC-0129853) for supporting the research reported this paper.en_US
dc.language.isoenen_US
dc.publisherIOP Publishing Ltden_US
dc.relation.ispartofPhysica Scriptaen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjecthost isotope effecten_US
dc.subjectoxygen local vibrationsen_US
dc.subjectimpuritiesen_US
dc.subjectCdTeen_US
dc.subjectInfrared-Absorptionen_US
dc.subjectGap Modesen_US
dc.subjectZincblendeen_US
dc.subjectImpuritiesen_US
dc.subjectIonsen_US
dc.titleHost isotope effects on the oxygen local vibrations in CdTeen_US
dc.typeArticleen_US
dc.institutionauthor-
dc.departmentİzmir Institute of Technologyen_US
dc.identifier.volume98en_US
dc.identifier.issue11en_US
dc.identifier.wosWOS:001095763700001en_US
dc.identifier.scopus2-s2.0-85175628787en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.doi10.1088/1402-4896/acfea3-
dc.authorscopusid6602388884-
dc.authorscopusid7005631542-
dc.identifier.wosqualityQ2-
dc.identifier.scopusqualityQ2-
item.grantfulltextnone-
item.openairetypeArticle-
item.fulltextNo Fulltext-
item.cerifentitytypePublications-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.languageiso639-1en-
crisitem.author.dept04.05. Department of Pyhsics-
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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