Physics – Condensed Matter – Superconductivity
Scientific paper
2006-06-08
Physics
Condensed Matter
Superconductivity
5 pages, 4 figures
Scientific paper
10.1103/PhysRevB.74.054502
We measured the Josephson vortex flow resistance as a function of magnetic field applied parallel to the ab-planes using annealed Y1Ba2Cu3Ox intrinsic Josephson junctions having high anisotropy (around 40) by oxygen content reduction. Periodic oscillations were observed in magnetic fields above 45-58 kOe, corresponding to dense-dilute boundary for Josephson vortex lattice. The observed period of oscillations, agrees well with the increase of one fluxon per two junctions ($H_{p}$\textit{=$\Phi $}$_{0}$\textit{/2Ls}), may correspond to formation of a triangular lattice of Josephson vortices as has been reported by Ooi et al. for highly anisotropic (larger than 200) Bi-2212 intrinsic Josephson junctions.
Hatano Takafumi
Iguchi I.
Kim Min-Soo
Maeda Hideki
Nagao Makoto
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