Self-fields and critical-current-density anisotropy of high-temperature superconductors
L. W. Conner, A. P. Malozemoff, I. A. Campbell
DOI 10.1103/PhysRevB.44.403 · Physical Review B
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Abstract
Hysteresis loops of high-temperature superconductors often exhibit a peak in the irreversible magnetization around zero field. A mechanism for such a peak is proposed, involving self-fields in platelet-shaped samples which bend vortices in plane, generating a contribution from a large in-plane component of critical current density. Numerical electromagnetic calculations demonstrate this effect and show that its size depends strongly on the presence of an additional isotropic component.
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