Imaging and spectroscopy of artificial-atom states in core/shell nanocrystal quantum dots

O. Millo*, D. Katz, Y. Cao, U. Banin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

132 Scopus citations

Abstract

Electronic wave functions in InAs/ZnSe core/shell nanocrystals were observed using imaging scanning tunneling microscopy. Images taken at a bias corresponding to the s conduction band state revealed that it is localized in central core region. It was found by the analysis of images taken at higher bias that p-state extends to the shell. Same results were observed by optical and tunneling spectroscopy. A similarity between the images and atomlike envelope wave functions of quantum dot was observed, where calculations were done within a particle in a box model.

Original languageAmerican English
Pages (from-to)5751-5754
Number of pages4
JournalPhysical Review Letters
Volume86
Issue number25
DOIs
StatePublished - 18 Jun 2001

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