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Antiferromagnetic order in CaK(Fe1-xNix)(4)As-4 and its interplay with superconductivity

TitleAntiferromagnetic order in CaK(Fe1-xNix)(4)As-4 and its interplay with superconductivity
Publication TypeJournal Article
Year of Publication2018
AuthorsKreyssig, A, Wilde, JM, Bohmer, AE, Tian, W, Meier, WR, Li, B, Ueland, BG, Xu, MY, Bud'ko, SL, Canfield, PC, McQueeney, RJ, Goldman, AI
JournalPhysical Review B
Date Published06
Type of ArticleArticle
ISBN Number2469-9950
Accession NumberWOS:000436625000003
Keywordsiron-based superconductors, physics

pin-vortex crystal (SVC) arrangement in the Fe plane and simple AFM stacking along the c direction is consistent with our observations. The SVC order is promoted by the reduced symmetry in the FeAs layer in the 1144 structure. The long-range SVC order coexists with superconductivity, however, similar to the doped 122 compounds, the ordered magnetic moment is gradually suppressed with the developing superconducting order parameter. This supports the notion that both collinear and noncollinear magnetism and superconductivity are competing for the same electrons coupled by Fermi surface nesting in iron arsenide superconductors.

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