Melting in 2D lennard-jones systems: What type of phase transition?

Alexander Z. Patashinski, Rafal Orlik, Antoni C. Mitus, Bartosz A. Grzybowski, Mark A Ratner

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

A typical configuration of an equilibrium 2D system of 2500 Lennard-Jones particles at melting is found to be a mosaic of crystallites and amorphous clusters. This mosaic significantly changed at times around the period τ of local vibrations, while most particles retain their nearest neighbors for times much longer than τ. In a system of 2500 particles, we found no phase separation for length scales larger than that of a crystallite. With decreasing density, the number of small amorphous clusters increased, and proliferation and percolation of amorphous matter separated the crystalline-ordered parts so that correlations between local order orientations of remote crystallites disappeared. We suggest that the mosaic is a manifestation of diminished stability of the crystalline structure resulting from competition between attraction and repulsion forces.

Original languageEnglish
Pages (from-to)20749-20755
Number of pages7
JournalJournal of Physical Chemistry C
Volume114
Issue number48
DOIs
Publication statusPublished - Dec 9 2010

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Melting
Phase transitions
melting
Crystallites
crystallites
Crystalline materials
Crystal orientation
Phase separation
attraction
vibration
configurations

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Energy(all)

Cite this

Melting in 2D lennard-jones systems : What type of phase transition? / Patashinski, Alexander Z.; Orlik, Rafal; Mitus, Antoni C.; Grzybowski, Bartosz A.; Ratner, Mark A.

In: Journal of Physical Chemistry C, Vol. 114, No. 48, 09.12.2010, p. 20749-20755.

Research output: Contribution to journalArticle

Patashinski, AZ, Orlik, R, Mitus, AC, Grzybowski, BA & Ratner, MA 2010, 'Melting in 2D lennard-jones systems: What type of phase transition?', Journal of Physical Chemistry C, vol. 114, no. 48, pp. 20749-20755. https://doi.org/10.1021/jp1069412
Patashinski, Alexander Z. ; Orlik, Rafal ; Mitus, Antoni C. ; Grzybowski, Bartosz A. ; Ratner, Mark A. / Melting in 2D lennard-jones systems : What type of phase transition?. In: Journal of Physical Chemistry C. 2010 ; Vol. 114, No. 48. pp. 20749-20755.
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