Commensurate-incommensurate transition and domain wall dynamics of adsorbed overlayers on a honeycomb substrate

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

Organisaatiot

  • Oakland University
  • Universidad de Concepcion
  • Brown University

Kuvaus

We introduce an effective one-mode phase-field crystal model for studying the commensurate-incommensurate transition and domain wall dynamics of the ( √ 3×√3)R30 phase found in systems such as Xe/Pt(111), or Xe and Kr on graphite. The model allows us to study large systems where the domain walls can be separated over large macroscopic distances and at the same time incorporate the microscopic details of the domain wall structures. The resulting phase diagram shows that an intermediate stripe incommensurate phase always separates the commensurate phase from the honeycomb incommensurate phases. The energy of the domain wall crossing is investigated. We also find that near a step edge, the domain walls tend to align perpendicularly to the step edge, in agreement with recent experimental observations.

Yksityiskohdat

AlkuperäiskieliEnglanti
Artikkeli56002
Sivut1-6
JulkaisuEPL
Vuosikerta116
Numero5
TilaJulkaistu - 1 joulukuuta 2016
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

ID: 10996155