Field dependent coherence length in the superclean, high-κ superconductor CeCoIn5

L. Debeer-Schmitt; C. D. Dewhurst; B. W. Hoogenboom; C. Petrovic; M. R. Eskildsen

doi:10.1103/PhysRevLett.97.127001

Field dependent coherence length in the superclean, high-κ superconductor CeCoIn5

L. Debeer-Schmitt, C. D. Dewhurst, B. W. Hoogenboom, C. Petrovic, M. R. Eskildsen

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Abstract

Using small-angle neutron scattering, we have studied the flux-line lattice (FLL) in the superclean, high-κ superconductor CeCoIn5. The FLL undergoes a first-order symmetry and reorientation transition at ∼0.55T at 50 mK. In addition, the FLL form factor in this material is found to be independent of the applied magnetic field, in striking contrast to the exponential decrease usually observed in superconductors. This result is consistent with a strongly field-dependent coherence length, proportional to the vortex separation.

Original language	English
Article number	127001
Journal	Physical Review Letters
Volume	97
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevLett.97.127001
State	Published - 2006
Externally published	Yes

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abstract = "Using small-angle neutron scattering, we have studied the flux-line lattice (FLL) in the superclean, high-κ superconductor CeCoIn5. The FLL undergoes a first-order symmetry and reorientation transition at ∼0.55T at 50 mK. In addition, the FLL form factor in this material is found to be independent of the applied magnetic field, in striking contrast to the exponential decrease usually observed in superconductors. This result is consistent with a strongly field-dependent coherence length, proportional to the vortex separation.",

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AU - Dewhurst, C. D.

AU - Hoogenboom, B. W.

AU - Petrovic, C.

AU - Eskildsen, M. R.

PY - 2006

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AB - Using small-angle neutron scattering, we have studied the flux-line lattice (FLL) in the superclean, high-κ superconductor CeCoIn5. The FLL undergoes a first-order symmetry and reorientation transition at ∼0.55T at 50 mK. In addition, the FLL form factor in this material is found to be independent of the applied magnetic field, in striking contrast to the exponential decrease usually observed in superconductors. This result is consistent with a strongly field-dependent coherence length, proportional to the vortex separation.

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Field dependent coherence length in the superclean, high-κ superconductor CeCoIn5

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