Direct observation of standing wave formation at surface steps using scanning tunneling spectroscopy

Phys. Rev. Lett. 71, 1071 – Published 16 August 1993
Y. Hasegawa and Ph. Avouris


Using scanning tunneling microscopy and spectroscopy, we have observed the formation of standing waves by the scattering of surface state electrons at steps and defects on the Au(111) surface. From the periods, peak positions, and intensities of the standing waves, the energy dispersion of the surface states, the scattering phase shifts as a function of energy and crystallographic direction, and coherence lengths could be determined.


  • Received 1 June 1993
  • Published in the issue dated 16 August 1993

© 1993 The American Physical Society

Authors & Affiliations

Y. Hasegawa and Ph. Avouris

  • IBM Research Division, Thomas J. Watson Research Center, Yorktown Heights, New York 10598


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