Volume 51, Number 3, August I 2000
|Page(s)||348 - 354|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||01 September 2002|
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
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