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Reconstructed (881) Si surface structure observed by scanning tunneling microscopy

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3 Author(s)
Kawamura, Tsutomu ; Department of Electrical Engineering, Kokushikan University, 4-28-1 Setagaya, Setagaya-ku, Tokyo 154 Japan ; Kojima, Shiro ; Kanzawa, Tomohide

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The high-index (881) surface has been studied by ultra-high-vacuum scanning tunneling microscopy (STM). Reconstruction of the (881) Si surface was found to occur, as evident from the appearance of a number of different characteristic patterns in the STM image, including various kinds of terraces, step walls, and kinks. A typical terrace had, on average, a (7×2) reconstruction. The step walls consisted of several split lattices. Their multiple reciprocal networks and their relationship to the step walls has been analyzed. The kinks were found to consist of one-dimensional long-period superlattices. The reason for the disorder is discussed in terms of the relationship between the effective dangling-bond density and the periodic bond chain vector approximation. © 1997 American Institute of Physics.

Published in:

Journal of Applied Physics  (Volume:82 ,  Issue: 12 )