Critical Role of the Surface Reconstruction in the Thermodynamic Stability of {105} Ge Pyramids on Si(001)

P. Raiteri, D. B. Migas, Leo Miglio, A. Rastelli, and H. von Känel
Phys. Rev. Lett. 88, 256103 – Published 6 June 2002
PDFExport Citation

Abstract

We show by molecular dynamics simulations on a scale comparable to experimental dimensions that a peculiar surface reconstruction of the {105} facets is responsible for the stability of Ge pyramids on Si(001). This finding is confirmed by ab initio total energy calculations for competing surface reconstructions and a very satisfactory comparison of the corresponding charge density maps to scanning tunneling microscopy measurements of the facets, both for filled and empty states.

  • Received 18 December 2001

DOI:https://doi.org/10.1103/PhysRevLett.88.256103

©2002 American Physical Society

Authors & Affiliations

P. Raiteri*, D. B. Migas, and Leo Miglio

  • INFM and Dipartimento di Scienza dei Materiali della Università degli Studi di Milano-Bicocca, Via Cozzi 53, I-20125 Milano, Italy

A. Rastelli

  • INFM and Dipartimento di Fisica “A. Volta” della Università degli Studi di Pavia, Via Bassi 6, I-27100 Pavia, Italy

H. von Känel

  • ETH Zürich, Laboratorium für Festkörperphysik, CH-8093 Zürich, Switzerland

  • *paolo.raiteri@unimib.it

References (Subscription Required)

Click to Expand
Issue

Vol. 88, Iss. 25 — 24 June 2002

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×