## Abstract

We formulate a new (1 + 1)D step model of unstable vicinal growth. The basic assumption is that the equilibrium adatom concentrations on both sides of the step are different. We deduce equations of step motion and numerically integrate them to obtain the step positions on a discrete time set. New dynamic phenomena are observed during the bunching process. The size-scaling of the minimal interestep distance l_{min}for first time is obtained as l_{min}∼ N^{-1/(n+1)}, where N is the number of steps in the bunch and n is the exponent in the step-step repulsions law U ∼ 1/d^{n}for two steps placed a distance d apart.

Original language | English (US) |
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Pages (from-to) | 389-394 |

Number of pages | 6 |

Journal | Comptes Rendus de L'Academie Bulgare des Sciences |

Volume | 60 |

Issue number | 4 |

State | Published - Jan 1 2007 |

## Keywords

- Scaling
- Step bunching models
- Universality classes
- Vicinal surfaces

## ASJC Scopus subject areas

- General

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