Superfluid density and field-induced magnetism in Ba(Fe1-xCox)2As2 and Sr(Fe1-xCox)2As2 measured with muon spin relaxation

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DOIResolve DOI: http://doi.org/10.1103/PhysRevB.82.094512
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TypeArticle
Journal titlePhysical review. B, Condensed matter and materials physics
Volume82
Issue9
Pages094512-1094512-7; # of pages: 7
AbstractWe report muon spin rotation (µSR) measurements of single-crystal Ba(Fe₁-xCox)₂As₂ and Sr(Fe₁-xCox)₂As₂. From measurements of the magnetic field penetration depth λ we find that for optimally and overdoped samples, 1/λ(T->0)² varies monotonically with the superconducting transition temperature TC. Within the superconducting state we observe a positive shift in the muon precession signal, likely indicating that the applied field induces an internal magnetic field. The size of the induced field decreases with increasing doping but is present for all Co concentrations studied.
Publication date
LanguageEnglish
AffiliationNRC Canadian Neutron Beam Centre; National Research Council Canada
Peer reviewedYes
NPARC number16945680
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Record identifierfabba88e-7731-4ab7-aeb5-c71ef7f9d977
Record created2011-03-03
Record modified2016-05-09
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