An STM study of the Si(0 0 1) (2 × 7)–Gd, Dy surface

Both Gd and Dy induce two different reconstructions of the Si(0 0 1) surface with 2 × 4 and 2 × 7 unit cells. Detailed examination by scanning tunneling microscopy shows that the structure of both phases is essentially the same for both metals. Furthermore, the 2 × 7 unit cell contains structural su...

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Bibliographic Details
Published in:Surface science 2003-08, Vol.540 (1), p.136-144
Main Authors: Liu, B.Z., Nogami, J.
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Diffusion
interface formation
Exact sciences and technology
Lanthanides
Physics
Scanning tunneling microscopy
Silicon
Solid surfaces and solid-solid interfaces
Surface relaxation and reconstruction
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
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Summary:Both Gd and Dy induce two different reconstructions of the Si(0 0 1) surface with 2 × 4 and 2 × 7 unit cells. Detailed examination by scanning tunneling microscopy shows that the structure of both phases is essentially the same for both metals. Furthermore, the 2 × 7 unit cell contains structural subunits that are the same as the 2 × 4 structure. The similarities and differences between the two superstructures induced by the two metals are discussed.
ISSN:0039-6028
1879-2758
DOI:10.1016/S0039-6028(03)00826-4