Experimental Studies of Two Dimensional Melting

  • S. K. Sinha
Part of the NATO Advanced Study Institutes Series book series (NSSB, volume 77)

Abstract

The nature of the crystalline state in two dimensions (2D) is reviewed, with particular emphasis on the form of the structure factor S(K) peculiar to 2D. Effects due to finite size are discussed, and it is shown that in most cases, this does not severely modify the expected power-law behavior for S(K) at most accessible wavevectors. The experimental determination of 2D solid and fluid phases in adsorbed monolayers is reviewed with particular reference to vapor-pressure isotherms, heat capacity and diffraction measurements. Results of diffraction studies of S(K) in the crystalline phase, and of the melting of incommensurate adsorbed monolayers and liquid crystal films are presented and discussed in the light of the Kosterlitz-Thouless theory of 2D melting. Finally, experiments on the lattice-gas-type melting of commensurate adsorbed monolayers are discussed with reference to theoretical expectations based on q-state Potts model calculations.

Keywords

Monte Carlo Bragg Reflection Finite Size Effect Coexistence Region Hexatic Phase 
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Copyright information

© Plenum Press, New York 1982

Authors and Affiliations

  • S. K. Sinha
    • 1
  1. 1.Argonne National LaboratoryArgonneUSA

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