We investigate possible step geometries on the rebonded-step reconstructed Ge(105) surface. We focus our attention on steps oriented along the [010] direction, which have been shown to play a key role in the pyramid-to-dome transition during Ge growth on Si(001). Using molecular dynamics simulations based on the Tersoff potential, we evaluate the step formation energy for several alternative structures. The step-bunching process is also analyzed, showing that one monolayer-high steps are likely to group into multistepped structures. Our results provide support for very recent experiments and modeling on the pyramid-to-dome transition in Ge/Si(001). (c) 2005 Elsevier B.V. All rights reserved.

Cereda, S., Montalenti, F., Miglio, L. (2005). Atomistic modeling of step formation and step bunching at the Ge(105) surface. SURFACE SCIENCE, 591(1-3), 23-31 [10.1016/j.susc.2005.06.016].

Atomistic modeling of step formation and step bunching at the Ge(105) surface

MONTALENTI, FRANCESCO CIMBRO MATTIA;MIGLIO, LEONIDA
2005

Abstract

We investigate possible step geometries on the rebonded-step reconstructed Ge(105) surface. We focus our attention on steps oriented along the [010] direction, which have been shown to play a key role in the pyramid-to-dome transition during Ge growth on Si(001). Using molecular dynamics simulations based on the Tersoff potential, we evaluate the step formation energy for several alternative structures. The step-bunching process is also analyzed, showing that one monolayer-high steps are likely to group into multistepped structures. Our results provide support for very recent experiments and modeling on the pyramid-to-dome transition in Ge/Si(001). (c) 2005 Elsevier B.V. All rights reserved.
Articolo in rivista - Articolo scientifico
Ge/Si(001); (105)Ge surface; step formation and bunching; dot facets; molecular dynamics; empirical calculations
English
ott-2005
591
1-3
23
31
none
Cereda, S., Montalenti, F., Miglio, L. (2005). Atomistic modeling of step formation and step bunching at the Ge(105) surface. SURFACE SCIENCE, 591(1-3), 23-31 [10.1016/j.susc.2005.06.016].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/1933
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