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Local electronic structure rearrangements and strong anharmonicity in YH3 under pressures up to 180 GPa

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dc.contributor.authorBesedin, S. P.
dc.contributor.authorMinkov, V. S.
dc.contributor.authorPudza, I.
dc.contributor.authorKuzmin, A.
dc.contributor.authorPurans, J.
dc.contributor.authorMenushenkov, A. P.
dc.contributor.authorIvanov, A. A.
dc.contributor.authorМенушенков, Алексей Павлович
dc.contributor.authorИванов, Андрей Анатольевич
dc.date.accessioned2024-11-29T12:26:07Z
dc.date.available2024-11-29T12:26:07Z
dc.date.issued2021
dc.description.abstract© 2021, The Author(s).The discovery of superconductivity above 250 K at high pressure in LaH10 and the prediction of overcoming the room temperature threshold for superconductivity in YH10 urge for a better understanding of hydrogen interaction mechanisms with the heavy atom sublattice in metal hydrides under high pressure at the atomic scale. Here we use locally sensitive X-ray absorption fine structure spectroscopy (XAFS) to get insight into the nature of phase transitions and the rearrangements of local electronic and crystal structure in archetypal metal hydride YH3 under pressure up to 180 GPa. The combination of the experimental methods allowed us to implement a multiscale length study of YH3: XAFS (short-range), Raman scattering (medium-range) and XRD (long-range). XANES data evidence a strong effect of hydrogen on the density of 4d yttrium states that increases with pressure and EXAFS data evidence a strong anharmonicity, manifested as yttrium atom vibrations in a double-well potential.
dc.identifier.citationLocal electronic structure rearrangements and strong anharmonicity in YH3 under pressures up to 180 GPa / Besedin, S.P. [et al.] // Nature Communications. - 2021. - 12. - № 1. - 10.1038/s41467-021-21991-x
dc.identifier.doi10.1038/s41467-021-21991-x
dc.identifier.urihttps://www.doi.org/10.1038/s41467-021-21991-x
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85102867402&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000631932000009
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/23785
dc.relation.ispartofNature Communications
dc.titleLocal electronic structure rearrangements and strong anharmonicity in YH3 under pressures up to 180 GPa
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue1
oaire.citation.volume12
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relation.isAuthorOfPublicationc64f5c02-8152-45cb-9106-892b0b07b0da
relation.isAuthorOfPublication.latestForDiscovery84fc4e0e-f9da-492c-9078-df3130188271
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