Commensurate suppression of vortex-lattice melting by pins of column defect lattice
Department of Physics, Fudan University - Shanghai 200433, PRC
Accepted: 24 May 2000
We consider the effects of a lattice of columnar defects (produced by ionic bombardment through a periodically perforated mask) and find that with commensurate matching the vortex-lattice melting is suppressed: the temperature-field curve near has a series of plateaus. Pin-spacing disorder above certain critical values washes out the plateaus.
PACS: 74.60.Ge – Flux pinning, flux creep, and flux-line lattice dynamics / 74.60.Ec – Mixed state, critical fields, and surface sheath
© EDP Sciences, 2000