Surface chemscal states of Cu2HgGeSe4 studied by X-ray photoelectron spectroscopyhttps://doi.org/10.48788/DVUA/DGS7UWTkach, ViraO.Y. KhyzhunN.M. DenysyukLuzhnyi Ivan VasyliovychKopylova Kateryna IhorivnaDataverseUA2026-08-192026-08-20T10:03:02ZThe 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.ChemistryEngineeringPhysicsSemiconductorsX-ray photoelectronic spectraElectronic structureEnglishB.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. (https://www.sciencedirect.com/science/article/pii/S0301010420300021), doi, 10.1016/j.chemphys.2020.110821, https://doi.org/10.1016/j.chemphys.2020.1108212019-09-01Tkach, ViraDepartment 47 of Surface Spectroscopy of Novel Materials, Frantsevich Institute for Problems of Materials Science2026-04-082019-08-012019-08-012020-05-01XPS experiment datasetCC BY 4.0