Phys. Rev. Lett. 68, 2313–2316 (1992)Surface stress as a driving force for interfacial mixingReceived 27 January 1992; published in the issue dated 13 April 1992 Displacive adsorption of As on vicinal Si(001) surfaces has in the past been attributed to reduction of step-related (extrinsic) surface stress. Here we show images of As adsorption on flat Si(001), obtained with in situ low-energy electron microscopy, and with scanning tunneling microscopy. We find displacive adsorption even on micrometer-sized terraces, on which steps play no significant role. These new results reveal the role of intrinsic surface stress as a driving force for interfacial mixing. © 1992 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.68.2313
DOI:
10.1103/PhysRevLett.68.2313
PACS:
61.14.Hg, 61.16.Di, 68.35.Bs, 68.55.Bd
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