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  Observation of interfering Bloch waves

Briner, B. G., Hofmann, P., Doering, M., Rust, H.-P., Plummer, E., & Bradshaw, A. M. (1997). Observation of interfering Bloch waves. EPL, 39(1), 67-72. doi:10.1209/epl/i1997-00315-2.

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 Creators:
Briner, B. G.1, Author           
Hofmann, Ph.2, 3, Author
Doering, Marcus1, Author           
Rust, Hans-Peter1, Author           
Plummer, E.W.2, 3, Author
Bradshaw, Alexander M.1, Author           
Affiliations:
1Fritz Haber Institute, Max Planck Society, ou_24021              
2Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996, USA, ou_persistent22              
3Oak Ridge National Laboratories, Oak Ridge, TN 37831-6057, USA, ou_persistent22              

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 Abstract: We have observed anisotropic standing waves on the Be(10̅10) surface using a low-temperature scanning tunnelling microscope (STM). Such charge density oscillations result from interference of electronic states near scattering centers. Since the charge density on Be(10̅10) is mainly provided by a surface state located near the edge of the first Brillouin zone, the wave functions are significantly different from plane waves. It is shown how this difference is reflected in the STM images. By numerical post-processing we find that the observed wave patterns exhibit a multiperiodic structure with individual periods differing by inverse lattice vectors. This result constitutes a direct experimental illustration of the Bloch theorem for electrons in a periodic potential.

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Language(s): eng - English
 Dates: 1997-03-041997-05-261997-07-01
 Publication Status: Issued
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1209/epl/i1997-00315-2
 Degree: -

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Title: EPL
  Other : EPL: A Letters Journal Exploring the Frontiers of Physics
  Other : Europhysics Letters
  Abbreviation : Europhys. Lett.
Source Genre: Journal
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Publ. Info: Les-Ulis : EDP Science
Pages: 6 Volume / Issue: 39 (1) Sequence Number: - Start / End Page: 67 - 72 Identifier: ISSN: 0295-5075
CoNE: https://pure.mpg.de/cone/journals/resource/0295-5075