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Phys. Rev. Lett. 55, 1765–1767 (1985)

Direct imaging of a novel silicon surface reconstruction

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J. M. Gibson, M. L. McDonald, and F. C. Unterwald
AT&T Bell Laboratories, 600 Mountain Avenue, Murray Hill, New Jersey 07974

Received 14 August 1985; published in the issue dated 21 October 1985

Silicon surface reconstructions are directly observed in profile by high-resolution transmission-electron microscopy. Low-energy surface facets are formed at edges by in situ annealing of a 〈110〉 thin specimen at an ambient pressure of 10-9 Torr. As well as 〈111〉, 〈100〉, and 〈110〉 reconstructed surfaces, extensive areas of flat 〈113〉 surface are found. By inspection of high-resolution images from the 〈113〉 surface a model involving one dimer per surface (1×1) unit cell is proposed, suggesting that low-energy surfaces need not be confined to high-symmetry orientations.

© 1985 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.55.1765
DOI:
10.1103/PhysRevLett.55.1765
PACS:
68.20.+t, 61.16.Di