Assorted Images from the STM Lab

B. S. Swartzentruber
Sandia National Laboratories
Albuquerque, NM 87185

Two views of Si addimers on the Si(001) surface. The addimers sit on top of the substrate dimer rows which act as tracks. At elevated temperature the dimers diffuse along these tracks.
Single addimer in orthogonal orientations. The epitaxial orientation (left) is slightly favored over the rotated orientation (right). At room temperature an addimer rotates between the two states about once per second.
Model of silicon addimer binding sites on and between the substrate dimer rows.


Two STM images of adsorbed dimers in the B and A configurations above the model surface.

Click on these silicon (001) images to download 1024 x 768 bitmaps that are perfect for your desktop background.

Silicon - Germanium
STM images of a mixed Ge-Si dimer adsorbed on the silicon (001) surface. The dimer has rotated 180 degrees between the two image frames.

Palladium in Copper
Image of palladium atoms embedded in the outermost layer of the copper (001) surface.

Last modified August 2002.

Brian S. Swartzentruber <>

Acknowledgment and Disclaimer