Analysis and calibration of in situ scanning tunnelling microscopy images with atomic resolution influenced by surface drift phenomena

Jens E.T. Andersen, P. Møller

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The influence of surface drift velocities on in situ scanning tunnelling microscopy (STM) experiment with atomic resolution is analysed experimentally and mathematically. Constant drift velocities much smaller than the speed of scanning can in many in situ STM experiments with atomic resolution result in an surface reconstraction. It is shown that a surface atomic structure can be distorted and observed as another atomic structure entirely owing to a velocity in the plane of the surface. The image can be resolved mathematically and the components of the drift velocity as well as the vectors of the non-distorted surface lattice can be determined. The calibration of distances can thus be carried out also when the image is influenced by drift. Results with gold surfaces and graphite surfaces are analysed and discussed.

Original languageEnglish
Pages (from-to)213-220
Number of pages8
JournalSurface and Coatings Technology
Volume67
Issue number3
DOIs
Publication statusPublished - Jan 1 1994

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Scanning tunneling microscopy
scanning tunneling microscopy
Calibration
atomic structure
Graphite
Gold
graphite
Experiments
gold
Scanning
scanning

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

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AB - The influence of surface drift velocities on in situ scanning tunnelling microscopy (STM) experiment with atomic resolution is analysed experimentally and mathematically. Constant drift velocities much smaller than the speed of scanning can in many in situ STM experiments with atomic resolution result in an surface reconstraction. It is shown that a surface atomic structure can be distorted and observed as another atomic structure entirely owing to a velocity in the plane of the surface. The image can be resolved mathematically and the components of the drift velocity as well as the vectors of the non-distorted surface lattice can be determined. The calibration of distances can thus be carried out also when the image is influenced by drift. Results with gold surfaces and graphite surfaces are analysed and discussed.

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