Anisotropy induced vortex lattice rearrangement in CaKFe4As4 Khasanov, Rustem Meier, William Bud’ko, Sergey Luetkens, Hubertus Canfield, Paul Amato, Alex
dc.contributor.department Ames Laboratory
dc.contributor.department Physics and Astronomy 2019-08-19T18:14:50.000 2020-06-29T23:22:10Z 2020-06-29T23:22:10Z 2019-04-19
dc.description.abstract <p>The magnetic penetration depth anisotropy gamma(lambda) = lambda(c)/lambda(ab) (lambda(ab) and lambda(c) are the in-plane and the out-of-plane components of the magnetic penetration depth) in a CaKFe4As4 single crystal sample (the critical temperature T-c similar or equal to 35 K) was studied by means of muon-spin rotation (mu SR). gamma(lambda) is almost temperature independent for T less than or similar to 20 K (gamma(lambda) similar or equal to 1.9) and it reaches similar or equal to 3.0 by approaching T-c. The change of gamma(lambda) induces the corresponding rearrangement of the flux line lattice (FLL), which is clearly detected via enhanced distortions of the FLL mu SR response. A comparison of gamma(lambda) with the anisotropy of the upper critical field (gamma H-c2) studied by Meier et al. [Phys. Rev. B 94, 064501 (2016)] reveals that gamma(lambda) is systematically higher than gamma H(c2 )at low temperatures and approaches gamma H-c2 for T -> T-c. The anisotropic properties of lambda are explained by the multigap nature of superconductivity in CaKFe4As4 and are caused by anisotropic contributions of various bands to the in-plane and the out-of-plane components of the superfluid density.</p>
dc.identifier archive/
dc.identifier.articleid 1324
dc.identifier.contextkey 14809070
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath ameslab_manuscripts/311
dc.language.iso en
dc.relation.ispartofseries IS-J 9888
dc.source.bitstream archive/|||Fri Jan 14 23:31:28 UTC 2022
dc.source.uri 10.1103/PhysRevB.99.140507
dc.subject.disciplines Condensed Matter Physics
dc.title Anisotropy induced vortex lattice rearrangement in CaKFe4As4
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication c5a8128b-7d98-4b8f-92d7-b1385e345713
relation.isOrgUnitOfPublication 4a05cd4d-8749-4cff-96b1-32eca381d930
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