UNSPECIFIED. (2002) Vortex-lattice transitions in YNi2B2C: Nature of the 45-degree reorientation. PHYSICAL REVIEW B, 66 (1). -. ISSN 1098-0121

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Abstract

High-resolution small-angle neutron-scattering (SANS) studies of the vortex lattice (VL) in single-crystal YNi2B2C allows us to separate Bragg scattered intensities from the multidomain VL that exists for Bparallel toc. A precise determination of the VL unit-cell apex angle, beta, shows that there is a finite transition width associated with the field-driven 45degrees reorientation of the VL at a field H-1. Low- and high-field rhombic VL phases coexist over a finite range of applied field with no continuous distortion of the VL between the two phases. The smooth variation in scattered intensity from each phase through the transition indicates a redistribution of domain populations between the low- and high-field vortex structures. Our data supports the notion of a first-order reorientation phase transition in the VL at H-1 in the presence of weak static disorder (vortex pinning).

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Journal or Publication Title:	PHYSICAL REVIEW B
Publisher:	AMERICAN PHYSICAL SOC
ISSN:	1098-0121
Date:	1 July 2002
Volume:	66
Number:	1
Number of Pages:	6
Page Range:	-
Identification Number:	10.1103/PhysRevB.66.014515
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/10671

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