{"@context":"http://schema.org","@type":"Dataset","@id":"https://doi.org/10.48788/DVUA/DGS7UW","identifier":"https://doi.org/10.48788/DVUA/DGS7UW","name":"Surface chemscal states of Cu2HgGeSe4 studied by X-ray photoelectron spectroscopy","creator":[{"@type":"Person","givenName":"Vira","familyName":"Tkach","affiliation":{"@type":"Organization","name":"Frantsevich Institute for Problems of Materials Science of NAS of Ukraine"},"sameAs":"https://orcid.org/0000-0002-2403-8607","@id":"https://orcid.org/0000-0002-2403-8607","identifier":"https://orcid.org/0000-0002-2403-8607","name":"Tkach, Vira"},{"@type":"Person","affiliation":{"@type":"Organization","name":"Frantsevich Institute for Problems of Materials Science of NAS of Ukraine"},"sameAs":"https://orcid.org/0000-0001-6727-643X","@id":"https://orcid.org/0000-0001-6727-643X","identifier":"https://orcid.org/0000-0001-6727-643X","name":"O.Y. Khyzhun"},{"@type":"Person","affiliation":{"@type":"Organization","name":"Frantsevich Institute for Problems of Materials Science of NAS of Ukraine"},"sameAs":"https://orcid.org/0000-0002-0492-1945","@id":"https://orcid.org/0000-0002-0492-1945","identifier":"https://orcid.org/0000-0002-0492-1945","name":"N.M. Denysyuk"},{"@type":"Person","givenName":"Ivan","familyName":"yi Ivan Vasyliovych","affiliation":{"@type":"Organization","name":"Frantsevich Institute for Problems of Materials Science of NAS of Ukraine"},"sameAs":"https://orcid.org/0000-0001-6727-643X","@id":"https://orcid.org/0000-0001-6727-643X","identifier":"https://orcid.org/0000-0001-6727-643X","name":"Luzhnyi Ivan Vasyliovych"},{"@type":"Person","givenName":"Kateryna","familyName":"Kateryna Ihorivna","affiliation":{"@type":"Organization","name":"Frantsevich Institute for Problems of Materials Science of NAS of Ukraine"},"sameAs":"https://orcid.org/0000-0001-6796-390X","@id":"https://orcid.org/0000-0001-6796-390X","identifier":"https://orcid.org/0000-0001-6796-390X","name":"Kopylova Kateryna Ihorivna"}],"author":[{"@type":"Person","givenName":"Vira","familyName":"Tkach","affiliation":{"@type":"Organization","name":"Frantsevich Institute for Problems of Materials Science of NAS of Ukraine"},"sameAs":"https://orcid.org/0000-0002-2403-8607","@id":"https://orcid.org/0000-0002-2403-8607","identifier":"https://orcid.org/0000-0002-2403-8607","name":"Tkach, Vira"},{"@type":"Person","affiliation":{"@type":"Organization","name":"Frantsevich Institute for Problems of Materials Science of NAS of Ukraine"},"sameAs":"https://orcid.org/0000-0001-6727-643X","@id":"https://orcid.org/0000-0001-6727-643X","identifier":"https://orcid.org/0000-0001-6727-643X","name":"O.Y. Khyzhun"},{"@type":"Person","affiliation":{"@type":"Organization","name":"Frantsevich Institute for Problems of Materials Science of NAS of Ukraine"},"sameAs":"https://orcid.org/0000-0002-0492-1945","@id":"https://orcid.org/0000-0002-0492-1945","identifier":"https://orcid.org/0000-0002-0492-1945","name":"N.M. Denysyuk"},{"@type":"Person","givenName":"Ivan","familyName":"yi Ivan Vasyliovych","affiliation":{"@type":"Organization","name":"Frantsevich Institute for Problems of Materials Science of NAS of Ukraine"},"sameAs":"https://orcid.org/0000-0001-6727-643X","@id":"https://orcid.org/0000-0001-6727-643X","identifier":"https://orcid.org/0000-0001-6727-643X","name":"Luzhnyi Ivan Vasyliovych"},{"@type":"Person","givenName":"Kateryna","familyName":"Kateryna Ihorivna","affiliation":{"@type":"Organization","name":"Frantsevich Institute for Problems of Materials Science of NAS of Ukraine"},"sameAs":"https://orcid.org/0000-0001-6796-390X","@id":"https://orcid.org/0000-0001-6796-390X","identifier":"https://orcid.org/0000-0001-6796-390X","name":"Kopylova Kateryna Ihorivna"}],"datePublished":"2026-08-19","dateModified":"2026-08-20","version":"1","description":"The electronic structure and surface chemical states of a Cu2HgGeSe4 single crystal, grown by the Bridgman–Stockbarger method, were investigated using X-ray photoelectron spectroscopy (XPS) for pristine and Ar+ ion-irradiated surfaces. High-resolution core-level XPS spectra (Cu 2p, Hg 4f, Ge 3d, Se 3d, Se 3p) and valence-band spectra were recorded before and after Ar+ ion sputtering to evaluate the core-level binding energies, chemical state preservation, and structural stability of the Cu2HgGeSe4 surface under ion-beam treatment.","keywords":["Chemistry","Engineering","Physics","Semiconductors","Condensed Matter Physics","Surface Science","Semiconductors","X-ray photoelectronic spectra","Electronic structure"],"citation":[{"@type":"CreativeWork","name":"B.V. Gabrelian, A.A. Lavrentyev, Tuan V. Vu, V.A. Tkach, O.V. Marchuk, K.F. Kalmykova, L.N. Ananchenko, O.V. Parasyuk, O.Y. Khyzhun, Quaternary Cu2HgGeSe4 selenide: Its electronic and optical properties as elucidated from TB-mBJ band-structure calculations and XPS and XES measurements, Chemical Physics, Volume 536, 2020, 110821, ISSN 0301-0104, https://doi.org/10.1016/j.chemphys.2020.110821. 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