Stripes of increased diamagnetic susceptibility in underdoped superconducting Ba(Fe1−xCox)2As2 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

doi:10.1103/PhysRevB.81.184513

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Stripes of increased diamagnetic susceptibility in underdoped superconducting Ba(Fe1−xCox)2As2 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

DOI 10.1103/PhysRevB.81.184513 · Physical Review B

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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−xCox)2As2, but not in tetragonal overdoped crystals. These stripes are consistent with enhanced superfluid density on twin boundaries.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Ba(Fe1-xCox)2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
BaFe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Sn Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown