New evidence to aid search for charge 'stripes' in superconductors: ...uncovering the detailed relationship between these stripe patterns and the appearance or disappearance of superconductivity is extremely difficult, particularly because the stripes that may accompany superconductivity are very likely moving, or fluctuating.
The scientists ground up crystals of the test material into a fine powder and placed samples of it in line with a beam of neutrons...
With increasing temperature, the scientists found that while the aspect ratio of the crystal structure changed, the displacements from average structure persisted, leading them to conclude by inference that the striped pattern of charge density also remained, even though it was no longer static.
"This is the first powder diffraction scattering evidence for fluctuating charge stripes above the temperature where we see static order..."
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