Modification of electron density in surface states: Scanning tunnelling microscopy observation of standing waves on Pd overlayers

Y. Hasegawa, Takayuki Suzuki, M. Ono, E. Ishikawa, A. Kamoshida, N. Matsuura, T. Eguchi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Modification of electron density in the surface states of Au(111) and Cu(111) surfaces by Pd deposition is demonstrated. Using a low-temperature scanning tunnelling microscope, electronic standing wave patterns are observed on a monolayer-high Pd layer whose wavelength is longer than that of the substrates. The observation indicates an upward shift of the energy level of the surface states and reduced electron density in the states on the overlayer. A standing wave pattern depending on magnetic field was observed around an impurity atom on the Au(111) surface.

Original languageEnglish
Pages (from-to)710-713
Number of pages4
JournalNanotechnology
Volume13
Issue number6
DOIs
Publication statusPublished - 2002 Dec

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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