Hexagonal and Square Flux Line Lattices in CeCoIn5

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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.
4 pages, 3 figs (1 color)

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Superconductivity

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http://salesiana.dossiersoluciones.com/handle/123456789/97960

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0211585
 http://arxiv.org/abs/cond-mat/0211585
 Phys. Rev. Lett. 90, 187001 (2003)
 doi:10.1103/PhysRevLett.90.187001

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arXiv