Low-energy electron microscopy of layer spacings and quantum electronic structure of ultrathin films

Laterally resolved measurements of the quantum size effect in electron reflectivity are made with low‐energy electron microscopy on Cu films on a W(110) surface. These measurements discriminate quantum interference peaks (QIPs) from regions of different film thickness. A Kronig–Penney model and a ph...

Full description

Saved in:
Bibliographic Details
Published in:Surface and interface analysis Vol. 37; no. 2; pp. 235 - 238
Main Authors: Man, Icarus K. H., Altman, M. S.
Format: Journal Article Conference Proceeding
Language:English
Published: Chichester, UK John Wiley & Sons, Ltd 01-02-2005
Wiley
Subjects:
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Laterally resolved measurements of the quantum size effect in electron reflectivity are made with low‐energy electron microscopy on Cu films on a W(110) surface. These measurements discriminate quantum interference peaks (QIPs) from regions of different film thickness. A Kronig–Penney model and a phase accumulation model are used to analyse QIPs to obtain average layer spacings for different film thicknesses and unoccupied band structure above the vacuum level. The average layer spacing is found to slightly exceed the strained layer spacing predicted by elasticity theory. The experimentally determined E(k) also agree with theoretical band structure from the Brillouin zone centre to the zone edge in the ΓL direction. Copyright © 2005 John Wiley & Sons, Ltd.
Bibliography:istex:DE6D74B457CEB75ABBD862BBDFDA2436914FCC49
ark:/67375/WNG-NDMBK00P-2
ArticleID:SIA1972
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0142-2421
1096-9918
DOI:10.1002/sia.1972