Energetics of highly kinked step edges

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)

Abstract

We have determined the step edge free energy, the step edge stiffness and dimensionless inverse step edge stiffness of the highly kinked < 010> oriented step on a (001) surface of a simple square lattice within the framework of a solid-on-solid model. We have found an exact expression for the step edge free energy in the case that only nearest neighbour interactions are taken into account. At low temperatures the dimensionless inverse step edge stiffness reduces to the universal value View the MathML source. However, with increasing temperature the dimensionless inverse step edge stiffness increases. Incorporation of an attractive next-nearest neighbour interaction leads to a suppression of the dimensionless inverse step edge stiffness. For a non-zero next-nearest neighbour interaction the dimensionless inverse step edge stiffness even vanishes at zero temperature.
Original languageUndefined
Pages (from-to)1261-1264
Number of pages5
JournalSurface science
Volume604
Issue number15-16
DOIs
Publication statusPublished - 2010

Keywords

  • METIS-266597
  • IR-72802

Cite this