Low-temperature scanning-tunneling-microscopy observations of the Si(001) surface with a low surface-defect density
- 15 October 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 50 (16) , 12262-12265
- https://doi.org/10.1103/physrevb.50.12262
Abstract
We have settled a controversy that surface dimers in the Si(001) surface are intrinsically symmetric or asymmetric. Atom-resolved scanning-tunneling-microscopy (STM) images of a low-defect-density (∼1%) surface at 144 K give definite evidence for the asymmetric-dimer model. We have identified a local influence of surface defects on buckling of dimers at low temperatures, which was not clarified in previous STM observations at 120 K.Keywords
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