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The deposited files cover the Tl-4f, Pb-4f, and Br-3d core levels together with the valence-band region and include both numerical spectral data and corresponding graphical representations. The data can be used to examine the elemental composition, core-level electronic states, and valence electronic structure of the untreated TlPb2Br5 single-crystal surface. All deposited spectra correspond to the pristine surface."},"dsDescriptionDate":{"typeName":"dsDescriptionDate","multiple":false,"typeClass":"primitive","value":"2026-08-22"}}]},{"typeName":"subject","multiple":true,"typeClass":"controlledVocabulary","value":["Chemistry","Engineering","Physics"]},{"typeName":"keyword","multiple":true,"typeClass":"compound","value":[{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"Semiconductors"},"keywordVocabulary":{"typeName":"keywordVocabulary","multiple":false,"typeClass":"primitive","value":"Wikidata"},"keywordVocabularyURI":{"typeName":"keywordVocabularyURI","multiple":false,"typeClass":"primitive","value":"https://www.wikidata.org/wiki/Q11456"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"X-ray photoelectron spectroscopy"},"keywordVocabulary":{"typeName":"keywordVocabulary","multiple":false,"typeClass":"primitive","value":"IUPAC Gold Book"},"keywordVocabularyURI":{"typeName":"keywordVocabularyURI","multiple":false,"typeClass":"primitive","value":"https://goldbook.iupac.org/terms/view/X06716"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"Electronic structure"},"keywordVocabulary":{"typeName":"keywordVocabulary","multiple":false,"typeClass":"primitive","value":"Wikidata"},"keywordVocabularyURI":{"typeName":"keywordVocabularyURI","multiple":false,"typeClass":"primitive","value":"https://www.wikidata.org/wiki/Q5358432"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"Quaternary chalcogenide"}},{"keywordValue":{"typeName":"keywordValue","multiple":false,"typeClass":"primitive","value":"Core-level spectra"}}]},{"typeName":"topicClassification","multiple":true,"typeClass":"compound","value":[{"topicClassValue":{"typeName":"topicClassValue","multiple":false,"typeClass":"primitive","value":"Condensed matter physics"},"topicClassVocab":{"typeName":"topicClassVocab","multiple":false,"typeClass":"primitive","value":"Wikidata"},"topicClassVocabURI":{"typeName":"topicClassVocabURI","multiple":false,"typeClass":"primitive","value":"https://www.wikidata.org/wiki/Q373184"}},{"topicClassValue":{"typeName":"topicClassValue","multiple":false,"typeClass":"primitive","value":"Semiconductor"},"topicClassVocab":{"typeName":"topicClassVocab","multiple":false,"typeClass":"primitive","value":"Wikidata"},"topicClassVocabURI":{"typeName":"topicClassVocabURI","multiple":false,"typeClass":"primitive","value":"https://www.wikidata.org/wiki/Q11456"}}]},{"typeName":"publication","multiple":true,"typeClass":"compound","value":[{"publicationCitation":{"typeName":"publicationCitation","multiple":false,"typeClass":"primitive","value":"Khyzhun, O.Y., Bekenev, V.L., Parasyuk, O.V., Myronchuk, G.L., and Kityk, I.V. (2014). Electronic structure and optical properties of TlPb2Br5 single crystals. Optical Materials, 36(4), 789–794. https://doi.org/10.1016/j.optmat.2013.11.025"},"publicationIDType":{"typeName":"publicationIDType","multiple":false,"typeClass":"controlledVocabulary","value":"doi"},"publicationIDNumber":{"typeName":"publicationIDNumber","multiple":false,"typeClass":"primitive","value":"10.1016/j.optmat.2013.11.025"},"publicationURL":{"typeName":"publicationURL","multiple":false,"typeClass":"primitive","value":"https://doi.org/10.1016/j.optmat.2013.11.025"}}]},{"typeName":"notesText","multiple":false,"typeClass":"primitive","value":"Sample information: Material: TlPb2Br5 single crystal Crystal-growth method: Bridgman–Stockbarger technique Surface condition: pristine Deposited spectral regions: survey, Tl 4f, Pb 4f, Br 3d, and valence band XPS measurement parameters: System: SPECS UHV-Analysis-System, Germany Electron energy analyzer: PHOIBOS 150 hemispherical analyzer Excitation source: Mg K-alpha radiation Photon energy: 1253.6 eV Anode voltage: 10 kV Emission current: 10 mA X-ray source power: 100 W Analyzer pass energy: 30 eV Analysis chamber pressure: approximately 4 × 10^-10 mbar Binding-energy range: 1000 to -10 eV Energy step: 0.1 eV Dwell time: 0.1 s Source angle: 45° Source-to-sample-plane angle: 55° Analyzer take-off angle: 90° relative to the sample surface (normal emission) The spectrometer energy scale was calibrated using the Au 4f7/2 and Cu 2p3/2 lines of pure gold and copper reference samples at binding energies of 84.00 ± 0.05 eV and 932.66 ± 0.05 eV, respectively. Charging-related energy shifts were corrected using the C 1s line of adventitious hydrocarbon contamination. Samples were mounted on a molybdenum sample holder."},{"typeName":"language","multiple":true,"typeClass":"controlledVocabulary","value":["English"]},{"typeName":"producer","multiple":true,"typeClass":"compound","value":[{"producerName":{"typeName":"producerName","multiple":false,"typeClass":"primitive","value":"Frantsevych Institute for Problems of Materials Science of NAS of Ukraine"},"producerAffiliation":{"typeName":"producerAffiliation","multiple":false,"typeClass":"primitive","value":"N.A.S. of Ukraine"},"producerAbbreviation":{"typeName":"producerAbbreviation","multiple":false,"typeClass":"primitive","value":"IPM NASU / ІПМ НАНУ"},"producerURL":{"typeName":"producerURL","multiple":false,"typeClass":"primitive","value":"https://www.ipms.kyiv.ua/?utm_source=chatgpt.com"},"producerLogoURL":{"typeName":"producerLogoURL","multiple":false,"typeClass":"primitive","value":"https://www.ipms.kyiv.ua/"}}]},{"typeName":"productionPlace","multiple":true,"typeClass":"primitive","value":["Kyiv, 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