Monte Carlo investigation of the role of initial conditions on oxygen diffusion in planar YBa{sub 2}Cu{sub 3}O{sub 6+{ital c}}

Journal Article · Thu Aug 01 04:00:00 EDT 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.54.4315· OSTI ID:286702

Pekalski, A; Skwarek, K ^[1]

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1. Institute of Theoretical Physics, University of Wrocl/aw, pl. Maxa Borna 9, 50-204 Wrocl/aw (Poland)

We investigate the role played by initial preparation of the system on the diffusion of oxygen ions in YBa{sub 2}Cu{sub 3}O{sub 6+{ital c}} superconductors. We use the asymmetric, next-nearest-neighbors Ising model and standard Monte Carlo simulations. When initially only one sublattice is populated with oxygen ions, the system is in a one-domain state and the diffusion coefficient has, for all temperatures, a minimum when {ital c}=1. When the oxygen ions are initially put on both sublattices, two or more domains may form. This leads to the appearance of an additional diffusion mechanism and the tracer diffusion coefficient has a maximum at low temperatures and {ital c}=1. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 286702
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 6 Vol. 54; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BARIUM OXIDES
CUPRATES
DIFFUSION
HIGH-TC SUPERCONDUCTORS
ISING MODEL
MONTE CARLO METHOD
OXYGEN
PHASE STUDIES
YTTRIUM OXIDES