Propagation of ripples in Monte Carlo models of sputter-induced surface morphology

Emmanuel O. Yewande, Alexander K. Hartmann, and Reiner Kree
Phys. Rev. B 71, 195405 – Published 9 May 2005

Abstract

Periodic ripples generated from the off-normal-incidence ion-beam bombardment of solid surfaces have been observed to propagate with a dispersion in the velocity. We investigate this ripple behavior by means of a Monte Carlo model of the erosion process, in conjuction with one of two different surface-diffusion mechanisms, representative of two different classes of materials; one is a Arrhenius-type Monte Carlo method including a term (possibly zero) that accounts for the Schwoebel effect, while the other is a thermodynamic mechanism without the Schwoebel effect. We find that the behavior of the ripple velocity and wavelength depends on the sputtering time scale, which is qualitatively consistent with experiments. Futhermore, we observe a strong temperature dependance of the ripple velocity, calling for experiments at different temperatures. Also, we observe that the ripple velocity vanishes ahead of the periodic ripple pattern.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
2 More
  • Received 17 May 2004

DOI:https://doi.org/10.1103/PhysRevB.71.195405

©2005 American Physical Society

Authors & Affiliations

Emmanuel O. Yewande*, Alexander K. Hartmann, and Reiner Kree

  • Institut für Theoretische Physik, Universität Göttingen, Friedrich-Hund Platz 1, 37077 Göttingen, Germany

  • *Electronic address: yewande@theorie.physik.uni-goettingen.de

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 71, Iss. 19 — 15 May 2005

Reuse & Permissions
Access Options

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×