Stripes of increased diamagnetic susceptibility in underdoped superconducting Ba(Fe<inf>1-x</inf> Co<inf>x</inf>)<inf>2</inf>As<inf>2</inf> single crystals: Evidence for an enhanced superfluid density at twin boundaries

B. Kalisky, J. R. Kirtley, J. G. Analytis, Jiun Haw Chu, A. Vailionis, I. R. Fisher, K. A. Moler

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Abstract

Superconducting quantum interference device microscopy shows stripes of increased diamagnetic susceptibility in the superconducting state of twinned, orthorhombic, underdoped crystals of Ba(Fe1-x Cox) 2As2, but not in tetragonal overdoped crystals. These stripes are consistent with enhanced superfluid density on twin boundaries. © 2010 The American Physical Society.
Original languageEnglish
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume81
Issue number18
DOIs
StatePublished - 17 May 2010

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