Control of charging in resonant tunneling through InAs nanocrystal quantum dots

David Katz*, Oded Millo, Shi Hai Kan, Uri Banin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

Tunneling spectroscopy of InAs nanocrystals deposited on graphite was measured using scanning tunneling microscopy, in a double-barrier tunnel-junction configuration. The effect of the junction symmetry on the tunneling spectra is studied experimentally and modeled theoretically. When the tip is retracted, we observe resonant tunneling through the nanocrystal states without charging. Charging is regained upon reducing the tip-nanocrystal distance, making the junction more symmetric. The effect of voltage distribution between the junctions on the measured spectra is also discussed.

Original languageEnglish
Pages (from-to)117-119
Number of pages3
JournalApplied Physics Letters
Volume79
Issue number1
DOIs
StatePublished - 2 Jul 2001

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