UNSPECIFIED (1997) Neutron scattering study of the flux lattice in YNi2B2C. PHYSICAL REVIEW LETTERS, 78 (25). pp. 4849-4852. ISSN 0031-9007

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Abstract

We observe a flux lattice with square symmetry in the superconductor YNi2B2C when the applied field is parallel to the c axis of the crystal. A square lattice observed previously by Yaron et al. in the isostructural magnetic analog ErNi2B2C was attributed to the interaction between magnetism in that system and the flux lattice. Since the Y-based compound does not order magnetically, it is clear that the structure of the flux lattice is unrelated to magnetic order. We do not observe any change in the mosaic or direction of the flux lines with applied field; these phenomena may be related to magnetism. In YNi2B2C, the strength of the flux lattice signal was seen to fall off rapidly with applied field; the results imply considerable disorder in the arrangement of the flux lines at 2.5 T, but are not consistent with melting. We see a markedly anisotropic flux lattice when the applied held is at 60 degrees to the c axis. In this case, the flux lattice is observed to be a distorted hexagon.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Journal or Publication Title:	PHYSICAL REVIEW LETTERS
Publisher:	AMERICAN PHYSICAL SOC
ISSN:	0031-9007
Date:	23 June 1997
Volume:	78
Number:	25
Number of Pages:	4
Page Range:	pp. 4849-4852
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/17583

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