Phys. Rev. Lett. 92, 116103 (2004) [4 pages]Atomic Structure of a (2×1) Reconstructed NiSi2/Si(001) InterfaceReceived 21 March 2003; published 19 March 2004 Nickel disilicide/silicon (001) interfaces were investigated by aberration corrected scanning transmission electron microscopy (STEM). The atomic structure was derived directly from the high spatial resolution high angle annular dark field STEM images without recourse to image simulation. It comprises fivefold coordinated silicon and sevenfold coordinated nickel sites at the interface and shows a 2×1 reconstruction. The proposed structure has not been experimentally observed before but has been recently predicted theoretically by others to be energetically favored. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.92.116103
DOI:
10.1103/PhysRevLett.92.116103
PACS:
68.37.Lp, 68.35.Ct
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