Field Dependent Coherence Length in the Superclean, High-{kappa} Superconductor CeCoIn{sub 5}

Journal Article · Fri Sep 22 00:00:00 EDT 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.97.127001· OSTI ID:20860860

DeBeer-Schmitt, L; Eskildsen, M R ^[1]; Dewhurst, C D ^[2]; Hoogenboom, B W ^[3]; Petrovic, C ^[4]

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1. Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556 (United States)
2. Institut Laue-Langevin, 6 Rue Jules Horowitz, F-38042 Grenoble (France)
3. M. E. Mueller Institute for Structural Biology, Biozentrum, and Institute of Physics, University of Basel, CH-4056 Basel (Switzerland)
4. Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)

Using small-angle neutron scattering, we have studied the flux-line lattice (FLL) in the superclean, high-{kappa} superconductor CeCoIn{sub 5}. The FLL undergoes a first-order symmetry and reorientation transition at {approx}0.55 T 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.

• OSTI ID: 20860860
• Journal Information: Physical Review Letters, Vol. 97, Issue 12; Other Information: DOI: 10.1103/PhysRevLett.97.127001; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERIUM COMPOUNDS
COBALT COMPOUNDS
COHERENCE LENGTH
FORM FACTORS
INDIUM COMPOUNDS
MAGNETIC FIELDS
NEUTRON DIFFRACTION
SMALL ANGLE SCATTERING
SUPERCONDUCTORS
SYMMETRY