In this scanning tunneling microscope (STM) image,
electron
density waves are seen to be breaking around two atom-sized defects on
the surface of a copper crystal. The resultant standing waves result
from the interference of the electron waves scattering from the
defects.
Courtesy, Don Eigler, IBM.
Textbook: Modern
Physics, Tipler and Llewellyn, 4th edition ISBN: 0716743450
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