Vortex lattice transitions in YNi2B2C |
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Authors: | SJ Levett CD Dewhurst DMcK Paul |
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Institution: | (1) Department of Physics, University of Warwick, CV4 7AL Coventry, UK;(2) Institut Laue Langevin, BP156-38042, Grenoble, France |
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Abstract: | We have performed extensive small-angle neutron scattering (SANS) diffraction studies of the vortex lattice in single crystal
YNi2B2C for B‖c. High-resolution SANS, combined with a field-oscillation vortex lattice preparation technique, allows us to separate Bragg
scattered intensities from two orthogonal domains and accurately determine the unit cell angle, β. The data suggest that upon increasing field there is a finite transition width where both low- and high-field distorted
hexagonal vortex lattice phases, mutually rotated by 45°, coexist. The smooth variation of diffracted intensity from each
phase through the transition corresponds to a redistribution of populations between the two types of domains. |
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Keywords: | (RE)Ni2B2C YNi2B2C vortex lattice non-locality |
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