L. Civale, L. Krusin-Elbaum
Physical Review Letters
Paper
Dynamics of vortices pinned by columnar defects in YBa2Cu307 crystals
Abstract
We have studied vortex dynamics in YBa2Cu307 crystals containing columnar defects (oriented.L to Cu-O planes), formed by 1 GeV Au-ions. The decay rate -dlnjldblt of persistent current j has a large peak near T = 40 K for H = 1 T. Higher fields suppressed the height and position of this peak, which disappeared for H > Bφ, the matching field. Analyzing the pinning energy shows regimes with several modes of pinning.
Related
J.M.E. Harper, S.E. Harnstram, et al.
Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
D. Niebieskikwiat, A. Silhanek, et al.
Physical Review B - CMMP
J.R. Thompson, L. Krusin-Elbaum, et al.
Applied Physics Letters