Phys. Rev. Lett. 94, 196103 (2005) [4 pages]Atomistic View of the Recombinative Desorption of H2 from H/Si(100)Received 4 January 2005; published 19 May 2005 Scanning tunneling microscopy is employed to investigate the recombinative desorption of H2 from hydrogenated Si(100) surfaces consisting of dihydride (SiH2) and monohydride (SiH) surface species organized in (1×1), (3×1), and (2×1) configurations. The results show that desorption from dihydrides involves a pair of neighboring dihydrides linked along the tetrahedral bond direction. Dihydrides in (3×1) domains are separated in the same direction by monohydrides, and desorption from a pair is geometrically impossible. The same desorption mechanism nevertheless applies via first a position switching of dihydrides with neighboring monohydrides. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.94.196103
DOI:
10.1103/PhysRevLett.94.196103
PACS:
68.35.Dv, 68.35.Ja, 73.20.Hb, 82.20.Kh
See AlsoComment: M. Dürr and U. Höfer, Comment on “Atomistic View of the Recombinative Desorption of H2 from H/Si(100)”, Phys. Rev. Lett. 96, 209601 (2006). Reply: D.-S. Lin and T.-C. Chiang, Lin and Chiang Reply:, Phys. Rev. Lett. 96, 209602 (2006). |
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