Hexagonal and Square Flux Line Lattices inCeCoIn5

2002/11/26 by M. R. Eskildsen, C. D. Dewhurst, Bart W. Hoogenboom +4 · 6 citations
Materials Science · Physics and Astronomy · #Iron-based superconductors research #Physics of Superconductivity and Magnetism #Rare-earth and actinide compounds #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevlett.90.187001

published as Phys. Rev. Lett. 90, 187001 (2003) · 4 pages, 3 figs (1 color)

arxiv created 2002/11/26 · openalex publication_date 2003/05/07 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

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 most 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.

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• Field Dependent Coherence Length in the Superclean, High-κSuperconductorCeCoIn5
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• Vortex Lattice Studies inCeCoIn5withH⊥c
• Field-angle dependence of the zero-energy density of states in the unconventional heavy-fermion superconductor CeCoIn5
• High-field state of the flux-line lattice in the unconventional superconductorCeCoIn5
• Anomalous quasiparticle transport in the superconducting state ofCeCoIn5