Confinement effect on scattering states in a thin lead film: Field-induced resonance states in the high-bias regime of scanning tunneling microscopy

Hui Liu, Jun Yan, Hongwu Zhao, Shiwu Gao, and Dongmin Chen
Phys. Rev. B 76, 113403 – Published 7 September 2007

Abstract

Field-induced resonance states in the high-bias regime of scanning tunneling microscopy are used to couple and probe the scattering states above the vacuum level in a thin lead film. The resonance energies show a bilayer oscillation as a function of film thickness. Theoretical modeling unveils that the oscillation results from the confinement of the highly excited scattering states by the quantum well, yielding a bilayer phase modulation at the boundaries where they are coherently coupled to the external states.

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  • Received 13 August 2007

DOI:https://doi.org/10.1103/PhysRevB.76.113403

©2007 American Physical Society

Authors & Affiliations

Hui Liu1, Jun Yan1,2, Hongwu Zhao1, Shiwu Gao1,2,*,†, and Dongmin Chen1,*,‡

  • 1Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
  • 2Department of Physics, Göteborg University, SE-412 96 Göteborg, Sweden

  • *Authors to whom correspondence should be addressed.
  • swgao@aphy.iphy.ac.cn
  • dmchen@aphy.iphy.ac.cn

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Issue

Vol. 76, Iss. 11 — 15 September 2007

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