Strain-Driven Mesoscopic Reconstruction of the As/Ge(111) Surface

W. E. McMahon; Iskander G. Batyrev; J. M. Olson; S. B. Zhang

doi:10.1103/PhysRevLett.89.076103

Strain-Driven Mesoscopic Reconstruction of the As/Ge(111) Surface

W. E. McMahon, Iskander G. Batyrev, J. M. Olson, S. B. Zhang

Chemistry and Nanoscience

National Renewable Energy Laboratory

Research output: Contribution to journal › Article › peer-review

7 Scopus Citations

Abstract

A truly mesoscopic-scale surface was reconstructed by scanning tunneling microscope (STM) studies of As/Ge(111) surfaces. A (5-7-5)-ringed trench structure that agrees with all the main features revealed by experiment was proposed. First-principles energy calculations combined with continuum elasticity theory showed that such reconstructions are driven by surface stresses produced by surface As atoms. Finally, it was found that a simple model that includes both force monopoles and force dipoles adequately describes the trench-trench interaction. The calculated tile size of N=30 agreed reasonably well with the experimentally observed range of N=30 to 50.

Original language	American English
Article number	076103
Pages (from-to)	076103/1-076103/4
Number of pages	4
Journal	Physical Review Letters
Volume	89
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevLett.89.076103 https://doi.org/10.1103/PhysRevLett.89.076103
State	Published - 12 Aug 2002

NREL Publication Number

NREL/JA-520-31685

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title = "Strain-Driven Mesoscopic Reconstruction of the As/Ge(111) Surface",

abstract = "A truly mesoscopic-scale surface was reconstructed by scanning tunneling microscope (STM) studies of As/Ge(111) surfaces. A (5-7-5)-ringed trench structure that agrees with all the main features revealed by experiment was proposed. First-principles energy calculations combined with continuum elasticity theory showed that such reconstructions are driven by surface stresses produced by surface As atoms. Finally, it was found that a simple model that includes both force monopoles and force dipoles adequately describes the trench-trench interaction. The calculated tile size of N=30 agreed reasonably well with the experimentally observed range of N=30 to 50.",

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AU - Zhang, S. B.

PY - 2002/8/12

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AB - A truly mesoscopic-scale surface was reconstructed by scanning tunneling microscope (STM) studies of As/Ge(111) surfaces. A (5-7-5)-ringed trench structure that agrees with all the main features revealed by experiment was proposed. First-principles energy calculations combined with continuum elasticity theory showed that such reconstructions are driven by surface stresses produced by surface As atoms. Finally, it was found that a simple model that includes both force monopoles and force dipoles adequately describes the trench-trench interaction. The calculated tile size of N=30 agreed reasonably well with the experimentally observed range of N=30 to 50.

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ER -

Strain-Driven Mesoscopic Reconstruction of the As/Ge(111) Surface

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