Dislocation Injection, Reconstruction, and Atomic Transport on {001} Au Terraces

Henny W. Zandbergen, Chun-Wei Pao, and David J. Srolovitz
Phys. Rev. Lett. 98, 036103 – Published 18 January 2007
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Abstract

High-resolution electron microscopy investigations of Au films show that adatoms on (100) surfaces insert into the underlying terrace to form surface dislocations. This injection readily occurs when the number of adatoms on a terrace is 20 atoms or less. The surface dislocation glides along the terrace, but is repelled from the edges. The dislocation escapes by squeezing out in the dislocation line direction (not gliding out the terrace edge). Atomistic simulations confirm the dislocation stability, easy glide along the terrace and trapping at the terrace edge. These results have profound implications for film growth.

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  • Received 14 February 2006

DOI:https://doi.org/10.1103/PhysRevLett.98.036103

©2007 American Physical Society

Authors & Affiliations

Henny W. Zandbergen1,2, Chun-Wei Pao2, and David J. Srolovitz2,3

  • 1National Centre for HREM, Kavli Centre of Nanoscience, Delft University of Technology, 2628 CJ Delft, The Netherlands
  • 2Princeton Institute for the Science and Technology of Materials, Princeton University, Princeton, New Jersey 08544, USA
  • 3Department of Physics, Yeshiva University, New York, New York 10033, USA

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Issue

Vol. 98, Iss. 3 — 19 January 2007

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