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...
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Published in: | Surface and interface analysis Vol. 37; no. 2; pp. 235 - 238 |
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Main Authors: | , |
Format: | Journal Article Conference Proceeding |
Language: | English |
Published: |
Chichester, UK
John Wiley & Sons, Ltd
01-02-2005
Wiley |
Subjects: | |
Online Access: | Get full text |
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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. |
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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 |