STM control of non-integer charge on a metal particle inferred from Coulomb staircase

Zhao Yan Rong, Alejandro Chang, Lesley F. Cohen, E. L. Wolf

Research output: Contribution to journalArticlepeer-review

Abstract

Coulomb blockade I-V characteristics are observed between a Au tip, 100 Å Ag particle, and conducting substrate, at 4.2 K. In such a voltage-biased double junction, the Coulomb threshold e/2C is expected to be a periodic function of the residual non-integer charge Q0 on the inner electrode (small particle), with period e. I-V spectra above an individual particle, obtained at 50 equally spaced values of tip-particle spacing, s, are analyzed to demonstrate control of Q0 by tip spacing s.

Original languageEnglish (US)
Pages (from-to)333-337
Number of pages5
JournalUltramicroscopy
Volume42-44
Issue numberPART 1
DOIs
StatePublished - Jul 1992

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Instrumentation

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