Publication
Physical Review Letters
Paper

Nucleation of ordered Ni island arrays on Au(111) by surface-lattice dislocations

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Abstract

Scanning tunneling microscopy of Ni deposited on Au(111) at room temperature reveals strikingly ordered island nucleation. Ni islands grow with spacing 73 along [121] in rows 140 apart at surface-lattice dislocations induced by the Au(111) herringbone reconstruction. The island arrays are explained by a model in which Ni atoms diffuse on the surface and aggregate at these dislocations. Island size varies by more than the shot-noise limit, suggesting that the initial sticking probability is low when a diffusing atom encounters a dislocation. © 1991 The American Physical Society.

Date

01 Apr 1991

Publication

Physical Review Letters

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