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Structure determination of the Si3N4/Si(111)-(8 × 8) surface: A combined study of Kikuchi electron holography, scanning tunneling microscopy, and ab initio calculations
Journal article   Peer reviewed

Structure determination of the Si3N4/Si(111)-(8 × 8) surface: A combined study of Kikuchi electron holography, scanning tunneling microscopy, and ab initio calculations

H. Ahn, C.-L. Wu, S. Gwo, C.M. Wei and Y.C. Chou
Physical Review Letters, Vol.86(13), pp.2818-2821
26/03/2001
DOI: https://doi.org/10.1103/PhysRevLett.86.2818
Appears in  keyword about Physics

Abstract

Structure determination;Si3N4/Si(111)-(8x8) surface;Kikuchi electron holography;scanning tunneling microscopy;ab initio calculations Physics and Astronomy (all)
A new atomic model of the Si 3 N 4 (0001)/Si(111)-(8×8) surfaces based on the experimental results from KEH, STM, and STS measurements is proposed. The existence of the 8/3 × 8/3-ordered nitrogen adatoms on the top layer and the 8×8 diamond-shaped unit cells in real space is demonstrated.

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