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    Symmetry and random sampling of symmetry independent configurations for the simulation of disordered solids

    35905.pdf (319.2Kb)
    Access Status
    Open access
    Authors
    D'Arco, P.
    Mustapha, S.
    Ferrabone, M.
    Noël, Y.
    De La Pierre, Marco
    Dovesi, R.
    Date
    2013
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    D'Arco, P. and Mustapha, S. and Ferrabone, M. and Noël, Y. and De La Pierre, M. and Dovesi, R. 2013. Symmetry and random sampling of symmetry independent configurations for the simulation of disordered solids. Journal of Physics: Condensed Matter. 25 (35): Article ID 355401.
    Source Title
    Journal of Physics: Condensed Matter
    DOI
    10.1088/0953-8984/25/35/355401
    ISSN
    0953-8984
    School
    Department of Applied Chemistry
    Remarks

    This is an author-created, un-copy edited version of an article accepted for publication in Journal of Physics: Condensed Matter. The publisher is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://doi.org/10.1088/0953-8984/25/35/355401

    URI
    http://hdl.handle.net/20.500.11937/35925
    Collection
    • Curtin Research Publications
    Abstract

    A symmetry-adapted algorithm producing uniformly at random the set of symmetry independent configurations (SICs) in disordered crystalline systems or solid solutions is presented here. Starting from Pólya's formula, the role of the conjugacy classes of the symmetry group in uniform random sampling is shown. SICs can be obtained for all the possible compositions or for a chosen one, and symmetry constraints can be applied. The approach yields the multiplicity of the SICs and allows us to operate configurational statistics in the reduced space of the SICs. The present low-memory demanding implementation is briefly sketched. The probability of finding a given SIC or a subset of SICs is discussed as a function of the number of draws and their precise estimate is given. The method is illustrated by application to a binary series of carbonates and to the binary spinel solid solution Mg(Al,Fe)2O4.

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