Evolution of two-dimensional wormlike nanoclusters on metal surfaces

A pinch-off phenomenon is discovered in the evolution of 2D wormlike nanoclusters formed in homoepitaxial adlayers. This feature is shown to distinguish mass transport via periphery diffusion from other mechanisms. Continuum modeling of such evolution accurately describes experimental observations,...

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Veröffentlicht in:	Physical review letters 2001-04, Vol.86 (14), p.3088-3091
Hauptverfasser:	Pai, W W, Wendelken, J F, Stoldt, C R, Thiel, P A, Evans, J W, Liu, D J
Format:	Artikel
Sprache:	eng
Schlagworte:	ANISOTROPY CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS DIFFUSION TRANSPORT
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Beschreibung
Zusammenfassung:	A pinch-off phenomenon is discovered in the evolution of 2D wormlike nanoclusters formed in homoepitaxial adlayers. This feature is shown to distinguish mass transport via periphery diffusion from other mechanisms. Continuum modeling of such evolution accurately describes experimental observations, particularly if one incorporates the anisotropy in step-edge line tension.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/physrevlett.86.3088