Stripes of increased diamagnetic susceptibility in underdoped superconducting Ba(Fe_1−xCo_x)₂As₂ single crystals: Evidence for an enhanced superfluid density at twin boundaries

B. Kalisky^1,2,*,†, J. R. Kirtley^1,2,3, J. G. Analytis^1,2,4, Jiun-Haw Chu^1,2,4, A. Vailionis^1,4, I. R. Fisher^1,2,4, and K. A. Moler^{1,2,4,5,*,‡
1}Geballe Laboratory for Advanced Materials, Stanford University, Stanford, California 94305-4045, USA
²Department of Applied Physics, Stanford University, Stanford, California 94305-4045, USA
³IBM Watson Research Center, Route 134, Yorktown Heights, New York 10598, USA
⁴Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
⁵Department of Physics, Stanford University, Stanford, California 94305-4045, USA

^*Authors to whom correspondence should be addressed.

^†beena@stanford.edu

^‡kmoler@stanford.edu

See Also: John R. Kirtley, Beena Kalisky, Lan Luan, and Kathryn A. Moler, Meissner response of a bulk superconductor with an embedded sheet of reduced penetration depth, Phys. Rev. B 81, 184514 (2010).