Anisotropic vortex lattice in YBa2Cu3O7

M. Yethiraj; H. A. Mook; G. D. Wignall; R. Cubitt; E. M. Forgan; S. L. Lee; D. M. Paul; T. Armstrong

doi:10.1103/PhysRevLett.71.3019

Anisotropic vortex lattice in YBa2Cu3O7

M. Yethiraj^*, H. A. Mook, G. D. Wignall, R. Cubitt, E. M. Forgan, S. L. Lee, D. M. Paul, T. Armstrong

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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, Θ, between the 8 kOe applied field and the crystallographic (001) axis for 0°≤Θ≤80°. 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°, 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.

Original language	English
Pages (from-to)	3019-3022
Number of pages	4
Journal	Physical Review Letters
Volume	71
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevLett.71.3019
Publication status	Published - 1993

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title = "Anisotropic vortex lattice in YBa2Cu3O7",

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, Θ, between the 8 kOe applied field and the crystallographic (001) axis for 0°≤Θ≤80°. 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°, 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.",

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doi = "10.1103/PhysRevLett.71.3019",

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T1 - Anisotropic vortex lattice in YBa2Cu3O7

AU - Yethiraj, M.

AU - Mook, H. A.

AU - Wignall, G. D.

AU - Cubitt, R.

AU - Forgan, E. M.

AU - Lee, S. L.

AU - Paul, D. M.

AU - Armstrong, T.

PY - 1993

Y1 - 1993

N2 - 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, Θ, between the 8 kOe applied field and the crystallographic (001) axis for 0°≤Θ≤80°. 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°, 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.

AB - 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, Θ, between the 8 kOe applied field and the crystallographic (001) axis for 0°≤Θ≤80°. 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°, 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.

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U2 - 10.1103/PhysRevLett.71.3019

DO - 10.1103/PhysRevLett.71.3019

M3 - Article

AN - SCOPUS:0000382139

SN - 0031-9007

VL - 71

SP - 3019

EP - 3022

JO - Physical Review Letters

JF - Physical Review Letters

IS - 18

ER -

Anisotropic vortex lattice in YBa2Cu3O7

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