Melting of a physisorbed commensurate phase

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

The general Landau-Ginzburg-Wilson Hamiltonian for the melting of a physisorbed 3×3 commensurate phase on a substrate of triangular lattice symmetry is examined. Two limits in which it simplifies are considered: first, the lattice-gas limit resulting from infinite substrate potential, and second, a decoupling limit in which the Hamiltonian reduces to three independent chiral clock models. Universality classes of melting transition with various degrees of symmetry might occur; evidence exists for two. It is argued that the "chiral" transition which may have been observed for Kr on graphite cannot be modeled by a simple lattice gas. Possible phase diagrams are examined and a new spin model with the appropriate symmetry is proposed. The general approach should be applicable to other commensurate surface phases.

Original languageEnglish (US)
Pages (from-to)5031-5038
Number of pages8
JournalPhysical Review B
Volume29
Issue number9
DOIs
StatePublished - Jan 1 1984
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Melting of a physisorbed commensurate phase'. Together they form a unique fingerprint.

  • Cite this