Accession Number:

ADA279962

Title:

Formation of Striped Surface Phases by Short-Range Forces.

Descriptive Note:

Technical rept. 1 Jun 93-31 May 94,

Corporate Author:

PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF CHEMISTRY

Report Date:

1994-05-01

Pagination or Media Count:

19.0

Abstract:

Anisotropic Cu-0 islands form striped periodic supergratings upon annealing an oxygen-exposed Cu110 surface. While the formation of these striped phases has been attributed to long-range repulsive forces between stripes, we show using the one-dimensional Ising model and Monte Carlo simulations that short range adsorbate-adsorbate interactions are capable of producing striped phases. In these systems there are at least two time scales of importance the time required for the formation of Cu-0 strings and the time required for the formation of stripes. It is demonstrated that the latter process can be extremely slow at room temperature and that approximately evenly spaced stripes are formed upon annealing by employing only short range interactions.

Subject Categories:

  • Inorganic Chemistry
  • Physical Chemistry
  • Statistics and Probability
  • Crystallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE