Imaging of electron potential landscapes on Au(111)

Bürgi, L.; Brune, H.; Kern, K.

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Imaging of electron potential landscapes on Au(111)

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Kern, K.
Department Nanoscale Science (Klaus Kern), Max Planck Institute for Solid State Research, Max Planck Society;

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Bürgi, L., Brune, H., & Kern, K. (2002). Imaging of electron potential landscapes on Au(111). Physical Review Letters, 89(17): 176801.

Cite as: https://hdl.handle.net/21.11116/0000-000E-ED79-0

Abstract

The Hohenberg-Kohn theorem states that the ground state
electron density completely determines the external potential
acting on an electron system. Inspired by this fundamental
theorem, we developed a novel approach to map directly the
electron potential in surface systems: linear response theory
applied to the total electron density as measured with scanning
tunneling microscopy determines the external potential.
Potential imaging is demonstrated for the s-p derived surface
state on Au(111), where the "herringbone" reconstruction
induces a periodic potential modulation, the details of which
are revealed by our technique.