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Superconductivity of underdoped PrFeAs(O,F) investigated via point-contact spectroscopy and nuclear magnetic resonance

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dc.contributor.authorDaghero, D.
dc.contributor.authorPiatti, E.
dc.contributor.authorZhigadlo, N. D.
dc.contributor.authorUmmarino, G. A.
dc.date.accessioned2024-11-27T08:41:40Z
dc.date.available2024-11-27T08:41:40Z
dc.date.issued2020
dc.description.abstractUnderdoped PrFeAs(O,F), one of the lesser known members of the 1111 family of iron-based superconductors, was investigated in detail by means of transport, magnetometry, nuclear magnetic resonance (NMR) measurements, and point-contact Andreev-reflection spectroscopy (PCARS). PCARS measurements on single crystals evidence the multigap nature of PrFeAs(O,F) superconductivity, shown to host at least two isotropic gaps, clearly discernible in the spectra, irrespective of the direction of current injection (i.e., along the ab planes or along the c axis). Additional features at higher energy can be interpreted as signatures of a strong electron-boson coupling, as demonstrated by a model which combines Andreev reflection with the Eliashberg theory. Magnetic resonance measurements in the normal phase indicate the lack of a magnetic order in underdoped PrFeAs(O,F), while As-75 NMR spin-lattice relaxation results suggest the presence of significant electronic spin fluctuations, peaking above T-c and expected to mediate the superconducting pairing.
dc.identifier.citationSuperconductivity of underdoped PrFeAs(O,F) investigated via point-contact spectroscopy and nuclear magnetic resonance / Daghero, D [et al.] // Physical Review B. - 2020. - 102. - № 10. - 10.1103/PhysRevB.102.104513
dc.identifier.doi10.1103/PhysRevB.102.104513
dc.identifier.urihttps://www.doi.org/10.1103/PhysRevB.102.104513
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85094155447&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000573182300009
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/22444
dc.relation.ispartofPhysical Review B
dc.titleSuperconductivity of underdoped PrFeAs(O,F) investigated via point-contact spectroscopy and nuclear magnetic resonance
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue10
oaire.citation.volume102
relation.isOrgUnitOfPublicationc8407a6f-7272-450d-8d99-032352c76b55
relation.isOrgUnitOfPublication.latestForDiscoveryc8407a6f-7272-450d-8d99-032352c76b55
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