Glassy phases and driven response of the phase-field-crystal model with random pinning

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

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Kuvaus

We study the structural correlations and the nonlinear response to a driving force of a two-dimensional phase-field-crystal model with random pinning. The model provides an effective continuous description of lattice systems in the presence of disordered external pinning centers, allowing for both elastic and plastic deformations. We find that the phase-field crystal with disorder assumes an amorphous glassy ground state, with only short-ranged positional and orientational correlations, even in the limit of weak disorder. Under increasing driving force, the pinned amorphous-glass phase evolves into a moving plastic-flow phase and then, finally, a moving smectic phase. The transverse response of the moving smectic phase shows a vanishing transverse critical force for increasing system sizes.

Yksityiskohdat

AlkuperäiskieliEnglanti
Artikkeli031102
Sivut1-8
JulkaisuPhysical Review E
Vuosikerta84
Numero3
TilaJulkaistu - 2011
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

    Tutkimusalat

  • disordered system, multiscale modeling, Phase-field crystal, two-dimensional glass

ID: 964719