Document Detail


Demixing processes in AgPd superlattices.
MedLine Citation:
PMID:  21828587     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
The present scanning tunneling microscopy (STM) study describes the growth of silver-palladium heterostructures at room temperature, with ab initio simulations of ordered AgPd phases supporting the interpretation of STM images. First, the growth of Pd on an Ag(111) surface proceeds in a multilayer mode, leading to the formation of a columnar structure. Then, upon Ag deposition on this structure, Ag and Pd partially mix and form a two-dimensional AgPd alloy on top of the columns. Finally, an atomically flat Ag(111) surface is restored, and two-dimensional growth continues. An interpretation of this peculiar growth mode including interfacial alloying is proposed based on thermodynamic and kinetic arguments.
Authors:
J Dumont; R Sporken; M J Verstraete; J Ghijsen; X Gonze
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Publication Detail:
Type:  Journal Article     Date:  2009-06-19
Journal Detail:
Title:  Journal of physics. Condensed matter : an Institute of Physics journal     Volume:  21     ISSN:  0953-8984     ISO Abbreviation:  J Phys Condens Matter     Publication Date:  2009 Aug 
Date Detail:
Created Date:  2011-08-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101165248     Medline TA:  J Phys Condens Matter     Country:  England    
Other Details:
Languages:  eng     Pagination:  315002     Citation Subset:  -    
Affiliation:
Laboratoire de Physique des Matériaux Electroniques (LPME), Facultés Universitaires Notre-Dame de la Paix, Namur, B-5000, Belgium.
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