12,477 research outputs found
Design of two-dimensional particle assemblies using isotropic pair interactions with an attractive well
Using ground-state and relative-entropy based inverse design strategies,
isotropic interactions with an attractive well are determined to stabilize and
promote as- sembly of particles into two-dimensional square, honeycomb, and
kagome lattices. The design rules inferred from these results are discussed and
validated in the dis- covery of interactions that favor assembly of the highly
open truncated-square and truncated-hexagonal lattices.Comment: 11 pages, 5 figures and supplemental materia
Archeological Survey Along the Broad River Near Leeds, South Carolina
https://scholarcommons.sc.edu/archanth_books/1008/thumbnail.jp
Archeological Survey of the Columbia Zoological Park, Richland and Lexington Counties, South Carolina
https://scholarcommons.sc.edu/archanth_books/1032/thumbnail.jp
Archeological Resources Along the Proposed Route of Interstate 77
https://scholarcommons.sc.edu/archanth_books/1007/thumbnail.jp
Slow dynamics at the smeared phase transition of randomly layered magnets
We investigate a model for randomly layered magnets, viz. a three-dimensional
Ising model with planar defects. The magnetic phase transition in this system
is smeared because static long-range order can develop on isolated rare spatial
regions. Here, we report large-scale kinetic Monte Carlo simulations of the
dynamical behavior close to the smeared phase transition which we characterize
by the spin (time) autocorrelation function. In the paramagnetic phase, its
behavior is dominated by Griffiths effects similar to those in magnets with
point defects. In the tail region of the smeared transition the dynamics is
even slower: the autocorrelation function decays like a stretched exponential
at intermediate times before approaching the exponentially small asymptotic
value following a power law at late times. Our Monte-Carlo results are in good
agreement with recent theoretical predictions based on optimal fluctuation
theory.Comment: 7 pages, 6 eps figures, final version as publishe
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