UNSPECIFIED (1993) ANISOTROPIC VORTEX LATTICE IN YBA2CU3O7. PHYSICAL REVIEW LETTERS, 71 (18). pp. 3019-3022. ISSN 0031-9007

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Abstract

We report on small angle neutron scattering observations of the flux line lattice (FLL) in a single crystal of YBa2Cu3O7. To probe the mass anisotropy ratio, m3/m1, measurements were made as a function of angle, THETA, between the 8 kOe applied field and the crystallographic (001) axis for 0-degrees less-than-or-equal-to THETA less-than-or-equal-to 80-degrees. With the rotation about an a/b (or y) axis, two symmetry-related distorted hexagonal FLL domains formed. Contrary to theoretical prediction, the lattices formed are consistent with a rotation of the short basis vector, a1, from the x axis by 15-degrees, after the effects of anisotropy are removed. The mass ratio is 20 +/- 2, which is slightly lower than published values. The temperature dependence of the intensity is not conventional.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics
Journal or Publication Title:	PHYSICAL REVIEW LETTERS
Publisher:	AMERICAN PHYSICAL SOC
ISSN:	0031-9007
Date:	1 November 1993
Volume:	71
Number:	18
Number of Pages:	4
Page Range:	pp. 3019-3022
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/21014

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