Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published January 15, 1999 | Published
Journal Article Open

Rehybridization of electronic structure in compressed two-dimensional quantum dot superlattices


Two-dimensional superlattices of organically passivated 2.6-nm silver quantum dots were prepared as Langmuir monolayers and transferred to highly oriented pyrolytic graphite substrates. The structural and electronic properties of the films were probed with variable temperature scanning tunneling microscopy. Particles passivated with decanethiol (interparticle separation distance of ∼1.1±0.2 nm) exhibited Coulomb blockade and staircase. For particles passivated with hexanethiol or pentanethiol (interparticle separation distance of ∼0.5±0.2 nm), the single-electron charging was quenched, and the redistribution of the density of states revealed that strong quantum mechanical exchange, i.e., wave-function hybridization, existed among the particles in these films.

Additional Information

© 1999 The American Physical Society. Received 8 October 1998. We acknowledge Alex Bratkovski and Andrew Briggs for stimulating discussions. J.R.H. acknowledges the Packard Foundation and the Sloan Foundation for financial support, as well the Hewlett Packard Corporation and an NSF-GOALI grant.

Attached Files

Published - MEDprb99.pdf


Files (185.3 kB)
Name Size Download all
185.3 kB Preview Download

Additional details

August 22, 2023
October 16, 2023