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dc.contributor.authorSong, Can-Li
dc.contributor.authorYin, Yi
dc.contributor.authorZech, Martin
dc.contributor.authorWilliams, Tess
dc.contributor.authorYee, Michael Manchun
dc.contributor.authorChen, Gen-Fu
dc.contributor.authorLuo, Jian-Lin
dc.contributor.authorWang, Nan-Lin
dc.contributor.authorHudson, E. W.
dc.contributor.authorHoffman, Jennifer Eve
dc.date.accessioned2014-08-25T18:18:29Z
dc.date.issued2013
dc.identifierQuick submit: 2014-08-08T15:17:36-04:00
dc.identifier.citationSong, Can-Li, Yi Yin, Martin Zech, Tess Williams, Michael M. Yee, Gen-Fu Chen, Jian-Lin Luo, Nan-Lin Wang, E. W. Hudson, and Jennifer E. Hoffman. 2013. “Dopant Clustering, Electronic Inhomogeneity, and Vortex Pinning in Iron-Based Superconductors.” Phys. Rev. B 87 (21) (June): 214519.en_US
dc.identifier.issn1098-0121en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:12748089
dc.description.abstractWe use scanning tunneling microscopy to map the surface structure, nanoscale electronic inhomogeneity, and vitreous vortex phase in the hole-doped superconductor Sr0.75K0.25Fe2As2 with Tc=32 K. We find that the low-T cleaved surface is dominated by a half Sr/K termination with 1×2 ordering and ubiquitous superconducting gap, while patches of gapless, unreconstructed As termination appear rarely. The superconducting gap varies by σ/Δ¯=16% on a ∼3 nm length scale, with average 2Δ¯/kBTc=3.6 in the weak-coupling limit. The vortex core size provides a measure of the superconducting coherence length ξ=2.3 nm. We quantify the vortex lattice correlation length at 9 T in comparison to several iron-based superconductors. The comparison leads us to suggest the importance of dopant size mismatch as a cause of dopant clustering, electronic inhomogeneity, and strong vortex pinning.en_US
dc.description.sponsorshipPhysicsen_US
dc.language.isoen_USen_US
dc.publisherAmerican Physical Society (APS)en_US
dc.relation.isversionofdoi:10.1103/PhysRevB.87.214519en_US
dash.licenseLAA
dc.titleDopant clustering, electronic inhomogeneity, and vortex pinning in iron-based superconductorsen_US
dc.typeJournal Articleen_US
dc.date.updated2014-08-08T19:17:36Z
dc.description.versionVersion of Recorden_US
dc.rights.holderCan-Li Song, Yi Yin, Martin Zech, Tess Williams, Michael Yee, Gen-Fu Chen, Jian-Lin Luo, Nan-Lin Wang, Eric. W. Hudson, Jennifer. E. Hoffman
dc.relation.journalPhysical Review Ben_US
dash.depositing.authorHoffman, Jennifer Eve
dc.date.available2014-08-25T18:18:29Z
dc.identifier.doi10.1103/PhysRevB.87.214519*
dash.contributor.affiliatedYee, Michael Manchun
dash.contributor.affiliatedWilliams, Tess Lawanna
dash.contributor.affiliatedHoffman, Jenny
dash.contributor.affiliatedSong, Can-Li


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