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Effect of Nd and Rh substitution on the spin dynamics of the Kondo-insulator CeFe2Al10

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dc.contributor.authorAlekseev, P. A.
dc.contributor.authorMignot, J. M.
dc.contributor.authorAdroja, D. T.
dc.contributor.authorLazukov, V. N.
dc.contributor.authorАлексеев, Павел Александрович
dc.date.accessioned2024-11-26T15:22:48Z
dc.date.available2024-11-26T15:22:48Z
dc.date.issued2020
dc.description.abstractThe dynamic magnetic properties of the Kondo-insulator state in CeFe2Al10 (spin gap, resonance mode) have been investigated using polarized neutrons on a single crystal of pure CeFe2Al10 . The results indicate that the magnetic excitations are polarized mainly along the orthorhombic a axis and their dispersion along the orthorhombic c direction could be determined. Polycrystalline samples of Nd- and Rh-doped CeFe2Al10 were also studied by the time-of-flight technique, with the aim of finding out how the low-energy magnetic excitation spectra change upon isoelectronic substitution of a rare-earth element (Nd) on the magnetic Ce site or electron doping (Rh) on the transition-element Fe sublattice. The introduction of magnetic Nd impurities strongly modifies the spin gap in the Ce dynamic magnetic response and causes the appearance of a quasielastic signal. The crystal-field excitations of Nd, studied in both LaFe2Al10 and CeFe2Al10, also reveal a significant influence of f -electron hybridization (largest in the case of Ce) on the crystal-field potential. As a function of the Rh concentration, a gradual change is observed from a Kondo-insulator to a metallic Kondo-lattice response, likely reflecting the decrease in the hybridization energy.
dc.identifier.citationEffect of Nd and Rh substitution on the spin dynamics of the Kondo-insulator CeFe2Al10 / Alekseev, PA [et al.] // Physical Review B. - 2020. - 102. - № 2. - 10.1103/PhysRevB.102.024438
dc.identifier.doi10.1103/PhysRevB.102.024438
dc.identifier.urihttps://www.doi.org/10.1103/PhysRevB.102.024438
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85089582879&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000550992600004
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/22098
dc.relation.ispartofPhysical Review B
dc.titleEffect of Nd and Rh substitution on the spin dynamics of the Kondo-insulator CeFe2Al10
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue2
oaire.citation.volume102
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relation.isAuthorOfPublication.latestForDiscovery9f219705-2904-4501-832c-afa2b452a615
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