Hexagonal and Square Flux Line Lattices in CeCoIn5

M. R. Eskildsen; C. D. Dewhurst; B. W. Hoogenboom; C. Petrovic; P. C. Canfield

doi:10.1103/PhysRevLett.90.187001

Hexagonal and Square Flux Line Lattices in CeCoIn5

Superconductivity 2007-05-23 v1

Authors: M. R. Eskildsen , C. D. Dewhurst , B. W. Hoogenboom , C. Petrovic , P. C. Canfield

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Abstract

Using small-angle neutron scattering, we have imaged the magnetic flux line lattice (FLL) in the d-wave heavy-fermion superconductor CeCoIn5. At low fields we find a hexagonal FLL. Around 0.6 T this undergoes what is very likely a first-order transition to square symmetry, with the nearest neighbors oriented along the gap node directions. This orientation of the square FLL is consistent with theoretical predictions based on the d-wave order parameter symmetry.

Keywords

flux line lattice CeCoIn5 hexagonal lattice square symmetry d-wave superconductor

Cite

@article{arxiv.cond-mat/0211585,
  title  = {Hexagonal and Square Flux Line Lattices in CeCoIn5},
  author = {M. R. Eskildsen and C. D. Dewhurst and B. W. Hoogenboom and C. Petrovic and P. C. Canfield},
  journal= {arXiv preprint arXiv:cond-mat/0211585},
  year   = {2007}
}

Comments

4 pages, 3 figs (1 color)

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