Determination of mean inner potential of germanium using off-axis electron holography

Jing Li, Martha McCartney, R. E. Dunin-Borkowski, David Smith

Research output: Contribution to journalArticle

34 Scopus citations

Abstract

Off-axis electron holography has been used to determine the mean inner potential of germanium using cleaved 90° wedge samples, where the wedge thickness profiles were checked by weak-beam dark-field extinction fringes. Dynamical contributions to the phase of the image were minimized by tilting to weakly diffracting conditions, as confirmed by reference to convergent-beam electron diffraction patterns. Small residual corrections were determined using multislice calculations. From a total of 18 separate measurements, it is concluded that the value of the mean inner potential is 14.3 (2) V, which agrees with recent theoretical calculations to within experimental error.

Original languageEnglish (US)
Pages (from-to)652-658
Number of pages7
JournalActa Crystallographica Section A: Foundations of Crystallography
Volume55
Issue number4
DOIs
StatePublished - 1999

ASJC Scopus subject areas

  • Structural Biology

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