Structural and dynamical heterogeneities in two-dimensional melting

H. Shiba, A. Onuki, T. Araki

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Using molecular-dynamics simulation, we study structural and dynamical heterogeneities at melting in two-dimensional one-component systems with 36000 particles. Between crystal and liquid we find intermediate hexatic states, where the density fluctuations are enhanced at small wave number k as well as those of the sixfold orientational order parameter. Their structure factors both grow up to the smallest wave number equal to the inverse system length. The intermediate scattering function of the density S(k, t) is found to relax exponentially with decay rate Γkkz with z∼2.6 at small k in the hexatic phase.

Original languageEnglish
Article number66004
JournalEPL
Volume86
Issue number6
DOIs
Publication statusPublished - 2009

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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