Quantum Corrals

  • D. Eigler
Conference paper
Part of the Springer Series in Materials Science book series (SSMATERIALS, volume 31)


Electrons occupying surface states on the closepacked faces of noble metals form a two-dimensional (2-d) nearly-free electron gas. Because this system is accessible to the scanning tunneling microscope (STM), it provides a unique opportunity to study the local properties of electrons in reduced dimensions. When these surface state electrons scatter off of surface defects or steps, a standing wave due to the interference of incident and reflected waves is created. We have discovered that this standing wave pattern can be directly imaged with the STM (Fig. 1). Analysis of the energy dependence of the periodicity of the standing waves gives an independent measure of the surface state dispersion (Fig. 2).


Standing Wave Scanning Tunneling Microscope Scanning Tunneling Microscope Image Step Edge Surface State Electron 
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  1. 1.
    M.F. Crommie, C.P. Lutz and D.M. Eigler, Nature, 363, 524 (1993).CrossRefGoogle Scholar
  2. 2.
    M.F. Crommie, C.P. Lutz and D.M. Eigler, Science, Oct. 8 (1993).Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1994

Authors and Affiliations

  • D. Eigler
    • 1
  1. 1.IBM Research DivisionAlmaden Research CenterSan JoseUSA

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