T. Penney, S. Von Molnár, et al.
Physical Review B
We report Bitter-pattern observations of the vortices for flux trapped in crystals of the orthorhombic high-Tc superconductor Y1Ba2Cu3O7. For B c axis, the slight distortion of the vortex lattice yields a penetration-depth anisotropy ranging from 1.11 to 1.15 for different crystals. For B c, the case of strong anisotropy, we observe chains of oval vortices. When they are not aligned by defects, the chains appear to undulate rather than adopt a crystalline habit. From the vortex spacing we deduce an anisotropy of 5.5± 1. © 1989 The American Physical Society.
T. Penney, S. Von Molnár, et al.
Physical Review B
L. Krusin-Elbaum, R.L. Greene, et al.
Physical Review Letters
G.J. Dolan, G.V. Chandrashekhar, et al.
Physical Review Letters
W. Jiang, N.C. Yeh, et al.
Journal of Physics Condensed Matter