Publication
Physical Review Letters
Paper

Real-space observation of -bonded chains and surface disorder on Si(111)2×1

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Abstract

Scanning tunneling microscopy is used to confirm the -bonded chain structure of the Si(111)2×1 surface. Both the amplitude and voltage dependence of the vertical corrugation exclude the buckling model for the structure of this surface. Spectroscopic measurements of the tunneling current versus voltage identify a band gap for the 2×1 surface states. Spatial images of disorder-related states are obtained by tunneling at energies inside of this band gap. © 1986 The American Physical Society.

Date

10 Feb 1986

Publication

Physical Review Letters

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