Coulomb blockade on imaged mesoscopic lead grains

J. C. Wan, K. A. McGreer, N. Anand, E. Nowak, A. M. Goldman

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


Low-temperature scanning-tunneling-microscope (STM) studies of charging effects have been carried out on granular lead films. Well-defined Coulomb-staircase and Coulomb-blockade I-V characteristics were frequently observed. For the first time, the latter were observed in the tunneling characteristics of grains imaged with scanning tunneling microscopy. Capacitances (<10-18 F) calculated from the I-V characteristics are compared to the values estimated from the STM images of these grains. In addition to the charging effects, an anomalous nonlinearity in the tunneling current was observed.

Original languageEnglish (US)
Pages (from-to)5604-5609
Number of pages6
JournalPhysical Review B
Issue number9
StatePublished - 1990

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