Two-dimensional vortex behavior in highly underdoped YBa_2Cu_3O_{6+x} observed by scanning Hall probe microscopy

J. W. Guikema; Hendrik Bluhm; D. A. Bonn; Ruixing Liang; W. N. Hardy; K. A. Moler

doi:10.1103/PhysRevB.77.104515

Two-dimensional vortex behavior in highly underdoped YBa_2Cu_3O_{6+x} observed by scanning Hall probe microscopy

Superconductivity 2009-09-29 v1

Authors: J. W. Guikema , Hendrik Bluhm , D. A. Bonn , Ruixing Liang , W. N. Hardy , K. A. Moler

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Abstract

We report scanning Hall probe microscopy of highly underdoped superconducting YBa_2Cu_3O_{6+x} with T_c ranging from 5 to 15 K which showed distinct flux bundles with less than one superconducting flux quantum (Phi_0) through the sample surface. The sub-Phi_0 features occurred more frequently for lower T_c, were more mobile than conventional vortices, and occurred more readily when the sample was cooled with an in-plane field component. We show that these features are consistent with kinked stacks of pancake vortices.

Keywords

scanning Hall probe microscopy underdoped superconductors YBa_2Cu_3O_{6+x} vortex behavior flux bundles sub-Phi_0 features pancake vortices

Cite

@article{arxiv.0802.2129,
  title  = {Two-dimensional vortex behavior in highly underdoped YBa_2Cu_3O_{6+x} observed by scanning Hall probe microscopy},
  author = {J. W. Guikema and Hendrik Bluhm and D. A. Bonn and Ruixing Liang and W. N. Hardy and K. A. Moler},
  journal= {arXiv preprint arXiv:0802.2129},
  year   = {2009}
}

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11 pages, 8 figures, accepted for publication in Physical Review B

Two-dimensional vortex behavior in highly underdoped YBa_2Cu_3O_{6+x} observed by scanning Hall probe microscopy

Abstract

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