Nanopicture of the Day

www.nanopicoftheday.org

June 24, 2004

Circles on Circles

Source:  M.F. Crommie, C.P. Lutz, D.M. Eigler

IBM Almaden

      References:

M.F. Crommie, C.P. Lutz, D.M. Eigler. "Imaging standing waves in a two-dimensional electron gas." Nature 363, 524-527 (1993).

Description:

Sometimes Nature is the best artist and all we need to do is catch it in the act. Here we see the result of imperfect sample preparation: two point defects adorning the copper (111) surface. The point defects (possibly impurity atoms) scatter the surface state electrons resulting in circular standing wave patterns.
 

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