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.
|Original language||American English|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|State||Published - 2010|
Bibliographical notealso in Viewpoint in Physics vol3 41
Also in: Virtual Journal of Applications of Superconductivity, June 1, 2010