Increase of the mean inner Coulomb potential in Au clusters induced by surface tension and its implication for electron scattering

Electron holography in a transmission electron microscope was applied to measure the phase shift {delta}{phi} induced by Au clusters as a function of the cluster size. Large {delta}{phi} observed for small Au clusters cannot be described by the well-known equation {delta}{phi}=C{sub E}V{sub 0}t (C{s...

Full description

Saved in:
Bibliographic Details
Published in:Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2007-12, Vol.76 (23), Article 235411
Main Authors: Popescu, Radian, Müller, Erich, Wanner, Matthias, Gerthsen, Dagmar, Schowalter, Marco, Rosenauer, Andreas, Böttcher, Artur, Löffler, Daniel, Weis, Patrick
Format: Article
Language:English
Subjects:
COMPRESSION STRENGTH
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
COULOMB FIELD
ELECTRONS
GOLD
HOLOGRAPHY
PHASE SHIFT
SCATTERING
SURFACE POTENTIAL
SURFACE TENSION
SURFACES
THICKNESS
TRANSMISSION ELECTRON MICROSCOPY
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Electron holography in a transmission electron microscope was applied to measure the phase shift {delta}{phi} induced by Au clusters as a function of the cluster size. Large {delta}{phi} observed for small Au clusters cannot be described by the well-known equation {delta}{phi}=C{sub E}V{sub 0}t (C{sub E}, interaction constant; V{sub 0}, mean inner Coulomb potential (MIP) of bulk gold; and t, cluster thickness). The rapid increase of the Au MIP with decreasing cluster size derived from {delta}{phi} can be explained by the compressive strain of surface atoms in the cluster.
ISSN:1098-0121
1550-235X
DOI:10.1103/PhysRevB.76.235411