Site-specific force-distance characteristics on NaCl(001): measurements versus atomistic simulations

Research output: Contribution to journalArticleScientificpeer-review

Researchers

  • M.A. Lantz
  • R. Hoffmann
  • Adam Foster

  • A. Baratoff
  • H.J. Hug
  • H.R. Hidber
  • H.-J. Güntherodt

Research units

  • University of Basel

Abstract

A scanning force microscope was used to measure the frequency shift above various atomic sites on a NaCl(001) surface at 7K. The data was converted to force and compared to the results of atomistic simulations using model NaCl and MgO tips. We find that the NaCl tip demonstrates better agreement in the magnitude of the forces in experiments, supporting the observation that the tip first came into contact with the sample. Using the MgO tip as a model of the originally oxidized silicon tip, we further demonstrate a possible mechanism for tip contamination at low temperatures.

Details

Original languageEnglish
Article number245426
Pages (from-to)1-9
Number of pages9
JournalPhysical Review B
Volume74
Issue number24
Publication statusPublished - 2006
MoE publication typeA1 Journal article-refereed

    Research areas

  • AFM, Experiment, NaCl, Theory

ID: 3509583