Convergent-Beam Low Energy Electron Diffraction (CBLEED) and the Measurement of Surface Dipole Layers

John Spence, H. C. Poon, D. K. Saldin

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


We propose the formation of LEED patterns using a highly convergent beam forming a probe of nanometer dimensions. A reflection rocking curve may then be recorded in many diffraction orders simultaneously. Multiple scattering calculations show that the intensity variations within these rocking curves is as sensitive to the parameters describing the surface dipole layer as conventional I/V scans. However the data may be collected from areas sufficiently small to avoid defects and surface steps, radiation damage controlled by use of low voltages, and the information depth selected by choice of the (constant) voltage. We briefly discuss also the application of this method to oxides and the formation of atomic-resolution scanning images in an idealized instrument in which coherent diffracted LEED orders overlap.

Original languageEnglish (US)
Pages (from-to)128-133
Number of pages6
JournalMicroscopy and Microanalysis
Issue number1
StatePublished - Feb 2004


  • Convergent beam
  • Dipole layer
  • LEED
  • Nanoprobe

ASJC Scopus subject areas

  • Instrumentation


Dive into the research topics of 'Convergent-Beam Low Energy Electron Diffraction (CBLEED) and the Measurement of Surface Dipole Layers'. Together they form a unique fingerprint.

Cite this