TY - JOUR
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.
UR - http://www.scopus.com/inward/record.url?scp=0000382139&partnerID=8YFLogxK
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 -