Abstract
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.
| Original language | English |
|---|---|
| Article number | 315002 |
| Journal | Journal of Physics: Condensed Matter |
| Volume | 21 |
| Issue number | 31 |
| DOIs | |
| Publication status | Published - 2009 |
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Dive into the research topics of 'Demixing processes in AgPd superlattices'. Together they form a unique fingerprint.Equipment
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Scanning Tunneling Microscopy
Robert Sporken (Manager)
Technological Platform Morphology - ImagingFacility/equipment: Equipment
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Synthesis, Irradiation and Analysis of Materials (SIAM)
Pierre Louette (Manager), Julien Colaux (Manager), Alexandre Felten (Manager), Tijani Tabarrant (Operator), Frederic COME (Operator) & Paul-Louis Debarsy (Manager)
Technological Platform Synthesis, Irradiation and Analysis of MaterialsFacility/equipment: Technological Platform