Pinning of stripes in cuprate superconductors

Details Pinning of stripes in cuprate superconductors Pinning of stripes in cuprate superconductors

2001-01-17

arxiv.org/abs/cond-mat/0101269v1

Phys. Rev. B 64, 054517 (2001)

Physics

Condensed Matter

Superconductivity

10 pages latex and 3 eps figures

Scientific paper

10.1103/PhysRevB.64.054517

We examine the effects of disorder on striped phases in high-temperature superconductors and related materials. In the presence of quenched disorder, pinning by the atomic lattice - which might give rise to commensuration effects - is irrelevant for the stripe array on large length scales. As a consequence, the stripes have divergent displacement fluctuations and topological defects are present at all temperatures. Therefore the positional order of the stripe array is short ranged, with a finite correlation length even at zero temperature. Thus lock-in phenomena can exist only as crossovers but not as transitions. In addition, this implies the glassy nature of stripes observed in recent experiments.

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