Precise engineering of quantum dot array coupling through their barrier widths.

ABSTRACT: Quantum dots are known to confine electrons within their structure. Whenever they periodically aggregate into arrays and cooperative interactions arise, novel quantum properties suitable for technological applications show up. Control over the potential barriers existing between neighboring quantum dots is therefore essential to alter their mutual crosstalk. Here we show that precise engineering of the barrier width can be experimentally achieved on surfaces by a single atom substitution in a haloaromatic compound, which in turn tunes the confinement properties through the degree of quantum dot intercoupling. We achieved this by generating self-assembled molecular nanoporous networks that confine the two-dimensional electron gas present at the surface. Indeed, these extended arrays form up

SUBMITTER: Piquero-Zulaica I 

PROVIDER: S-EPMC5629208 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature