Publication: Spectroscopic studies of solid Ar condensed on a gold surface
Дата
2022
Авторы
Karazhanov, S. Z.
Kurelchuk, U. N.
Borisyuk, P. V.
Chubunova, E. V.
Kolachevsky, N. N.
Lebedinskii, Y. Y.
Myzin, D. A.
Nikolaev, A. V.
Tkalya, E. V.
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Аннотация
© 2021 Elsevier B.V.We have studied condensed solid argon films on a gold surface, measuring its reflected electron energy-loss spectra (REELS) and X-ray photoelectron spectra (XPS) at the temperatures 5 K and 20 K. We have also reproduced theoretically the REELS considering both face-centered cubic (FCC) and hexagonal close-packed (HCP) lattices of solid argon using density-functional theory (DFT), GW approximation, random-phase approximation (RPA) and the Bethe–Salpeter equation (BSE). In the calculations the local-field dielectric screening, quasiparticles, and excitonic effects have been taken into account. The excitonic peaks in the REELS appear at ∼12 eV whereas the calculated electronic bandgap amounts to 14.3–14.4 eV for both the FCC and HCP lattices. Our results show that a solid argon film is a wide-gap dielectric best suited for implanting Th and studying its low-lying nuclear transition in 229Th with the energy of 8.2 eV.
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Spectroscopic studies of solid Ar condensed on a gold surface / Karazhanov, S.Z. [et al.] // Materials Letters. - 2022. - 306. - 10.1016/j.matlet.2021.130930
URI
https://www.doi.org/10.1016/j.matlet.2021.130930
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https://openrepository.mephi.ru/handle/123456789/28580
https://www.scopus.com/record/display.uri?eid=2-s2.0-85116439242&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000709702000010
https://openrepository.mephi.ru/handle/123456789/28580