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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