Imaging electron wave functions inside open quantum rings

Rodrigues Martins, Frederico;Hackens, Benoît;Pala, M. G.;Ouisse, T.;Huant, S.;et.al.
(2007) Physical Review Letters — Vol. 99, n° 13 (2007)

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Authors
  • Rodrigues Martins, FredericoUCLouvain
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  • Pala, M. G.
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  • Ouisse, T.
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  • Huant, S.
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Abstract
Combining scanning gate microscopy (SGM) experiments and simulations, we demonstrate low temperature imaging of the electron probability density |Psi|(2)(x,y) in embedded mesoscopic quantum rings. The tip-induced conductance modulations share the same temperature dependence as the Aharonov-Bohm effect, indicating that they originate from electron wave function interferences. Simulations of both |Psi|(2)(x,y) and SGM conductance maps reproduce the main experimental observations and link fringes in SGM images to |Psi|(2)(x,y).
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Citations

Rodrigues Martins, F., Hackens, B., Pala, M. G., Ouisse, T., Sellier, H., Wallart, X., Bollaert, S., Cappy, A., Chevrier, J., Bayot, V., & Huant, S. (2007). Imaging electron wave functions inside open quantum rings. Physical Review Letters, 99(13). https://doi.org/10.1103/PhysRevLett.99.136807 (Original work published 2007)