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Título

Labyrinthine Island Growth during Pd/Ru(0001) Heteroepitaxy

AutorRougemaille, Nicolas; El Gabaly, Farid; Stumpf, Roland; Schmid, Andreas K; Thürmer, Konrad; Bartelt, Norman C.; de la Figuera, Juan
Fecha de publicación15-nov-2007
EditorAmerican Physical Society
CitaciónarXiv:0711.2491v1
Physical Review Letters 99, 10 (2007) 106101
ResumenUsing low energy electron microscopy we observe that Pd deposited on Ru only attaches to small sections of the atomic step edges surrounding Pd islands. This causes a novel epitaxial growth mode in which islands advance in a snakelike motion, giving rise to labyrinthine patterns. Based on density functional theory together with scanning tunneling microscopy and low energy electron microscopy we propose that this growth mode is caused by a surface alloy forming around growing islands. This alloy gradually reduces step attachment rates, resulting in an instability that favors adatom attachment at fast advancing step sections.
DescripciónFirst published as pre-print arXiv:0711.2491v1 (11/15/2007), then published in Physical Review Letters 99, 10 106101 (2007)
URIhttp://hdl.handle.net/10261/2800
DOI10.1103/PhysRevLett.99.106101
ISSN0031-9007
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