Vortex correlations in a fully frustrated two-dimensional superconducting network
CNRS-CRTBT, associé à l'Université Joseph Fourier
25 Av. des Martyrs, 38042 Grenoble Cedex 9, France
Accepted: 23 April 2002
We have investigated the vortex state in a superconducting dice network using the Bitter decoration technique at several magnetic frustrations and 1/3. In contrast to other regular network geometries where the existence of a commensurate state was previouly demonstrated, no ordered state was observed in the dice network at f=1/2 and the observed vortex-vortex correlation length is close to one lattice cell.
PACS: 64.60.-i – General studies of phase transitions / 74.60.Ge – Flux pinning, flux creep, and flux-line lattice dynamics / 74-80.-g – Spatially inhomogeneous structures
© EDP Sciences, 2002