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|Title:||Cu-Site Disorder in CuAl2O4 as Studied by XPS Spectroscopy|
|Authors:||Zhidkov, I. S.|
Belik, A. A.
Kukharenko, A. I.
Cholakh, S. O.
Taran, L. S.
Streltsov, S. V.
Kurmaev, E. Z.
Pleiades Publishing Ltd
|Citation:||Cu-Site Disorder in CuAl2O4 as Studied by XPS Spectroscopy / I. S. Zhidkov, A. A. Belik, A. I. Kukharenko et al. — DOI 10.3390/su14031283 // JETP Letters. — 2021. — Vol. 114. — Iss. 9. — P. 556-560.|
|Abstract:||The results of full study of X-ray photoelectron spectra (XPS) of spin-liquid candidate CuAl2O4 including the measurements of high-energy resolved core level (Cu 2p, Al 3p, O 1s), Cu LMM Auger and valence band spectra are presented. The comparison of obtained results with spectra of reference samples and specially performed density functional theory calculations has confirmed a finite Cu site-disorder in CuAl2O4, where about 30% of Cu2+ ions occupy the octahedral sites. Obtained valence band spectra can be used in further theoretical studies aimed on the investigation of electronic and magnetic properties of this mysterious ma-terial. © 2021, The Author(s).|
|metadata.dc.description.sponsorship:||The DFT calculations were supported by the Russian Science Foundation (project no. 20-62-46047). The XPS measurements were supported by the Ministry of Science and Higher Education of the Russian Federation (theme Electron no. AAAA-A18-118020190098-5 and project FEUZ 2020-0060). I.S. Zhidkov acknowledges the support of the Council of the President of the Russian Federation for State Support of Young Scientists and Leading Scientific Schools (project no. MK-989.2020.2).|
|RSCF project card:||20-62-46047|
|Appears in Collections:||Научные публикации, проиндексированные в SCOPUS и WoS CC|
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