Evolution of London penetration depth with scattering in single crystals of K1−xNaxFe2As2

Simple item page
dc.citation.issueNumber17en_US
dc.citation.journalTitlePhysical Review Ben_US
dc.citation.volumeNumber89en_US
dc.contributor.authorKim, H.en_US
dc.contributor.authorTanatar, M.A.en_US
dc.contributor.authorLiu, Yongen_US
dc.contributor.authorSims, Zachary Coleen_US
dc.contributor.authorZhang, Chenglinen_US
dc.contributor.authorDai, Pengchengen_US
dc.contributor.authorLograsso, T.A.en_US
dc.contributor.authorProzorov, R.en_US
dc.date.accessioned2017-06-05T20:44:20Z
dc.date.available2017-06-05T20:44:20Z
dc.date.issued2014en_US
dc.description.abstractLondon penetration depth, λ(T), was measured in single crystals of K1−xNaxFe2As2, x=0 and 0.07, down to temperatures of 50 mK, ∼Tc/50. Isovalent substitution of Na for K significantly increases impurity scattering, with ρ(Tc) rising from 0.2 to 2.2 μΩ cm, and leads to a suppression of Tc from 3.5 to 2.8 K. At the same time, a close to T-linear Δλ(T) in pure samples changes to almost T2 in the substituted samples. The behavior never becomes exponential as expected for the accidental nodes, as opposed to T2 dependence in superconductors with symmetry imposed line nodes. The superfluid density in the full temperature range follows a simple clean and dirty d-wave dependence, for pure and substituted samples, respectively. This result contradicts suggestions of multiband scenarios with strongly different gap structure on four sheets of the Fermi surface.en_US
dc.identifier.citationKim, H., Tanatar, M.A., Liu, Yong, et al.. "Evolution of London penetration depth with scattering in single crystals of K1−xNaxFe2As2." <i>Physical Review B,</i> 89, no. 17 (2014) American Physical Society: https://doi.org/10.1103/PhysRevB.89.174519.
dc.identifier.doihttps://doi.org/10.1103/PhysRevB.89.174519en_US
dc.identifier.urihttps://hdl.handle.net/1911/94802
dc.language.isoengen_US
dc.publisherAmerican Physical Society
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
dc.titleEvolution of London penetration depth with scattering in single crystals of K1−xNaxFe2As2en_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
penetration-depth.pdf
Size:
716.84 KB
Format:
Adobe Portable Document Format
Description:
Download
Collections
Faculty Publications
Physics and Astronomy Publications