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Title: Elastic lattice in an incommensurate background

We study a harmonic triangular lattice, which relaxes in the presence of an incommensurate short-wavelength potential. Monte Carlo simulations reveal that the elastic lattice exhibits only short-ranged translational correlations, despite the absence of defects in either lattice. Extended orientational order, however, persists in the presence of the background. Translational correlation lengths exhibit approximate power-law dependence upon cooling rate and background strength. Our results may be relevant to Wigner crystals, atomic monolayers on crystals surfaces, and flux-line and magnetic bubble lattices.
Authors:
;  [1]
  1. (Department of Physics and Astronomy, Lehman College, City University of New York, Bedford Park Boulevard West, Bronx, New York 10468-1589 (United States))
Publication Date:
OSTI Identifier:
6692556
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review, B: Condensed Matter; (United States); Journal Volume: 51:1
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CRYSTAL LATTICES; RELAXATION; COMPUTERIZED SIMULATION; ELASTICITY; HARMONIC OSCILLATOR MODELS; MONTE CARLO METHOD; TWO-DIMENSIONAL CALCULATIONS; CALCULATION METHODS; CRYSTAL STRUCTURE; MATHEMATICAL MODELS; MECHANICAL PROPERTIES; SIMULATION; TENSILE PROPERTIES 665000* -- Physics of Condensed Matter-- (1992-)