Dipole-induced asymmetric conduction in tunneling junctions comprising self-assembled monolayers

Andrii Kovalchuk, David A. Egger, Tarek Abu-Husein, Egbert Zojer, Andreas Terfort, Ryan C. Chiechi*

*Bijbehorende auteur voor dit werk

OnderzoeksoutputAcademicpeer review

20 Citaten (Scopus)
160 Downloads (Pure)

Samenvatting

This paper describes the observation of asymmetric conductance in the form of differing ratios of current density (J) as a function of voltage (vertical bar V vertical bar) in tunneling junctions comprising self-assembled monolayers on gold using eutectic Ga-In as a top contact. Mono-layers comprising compounds with nearly identical physical and electronic properties show opposite directions of this asymmetry. We tested the statistical significance of the effect and ascribed it to the collective action of embedded dipoles arising from pyrimidyl groups that are arranged parallel or antiparallel to the transport direction. We ascribe the effect to the bias-induced (de) localization of the frontier states that mitigate transport.

Originele taal-2English
Pagina's (van-tot)69479-69483
Aantal pagina's5
TijdschriftRSC Advances
Volume6
Nummer van het tijdschrift73
DOI's
StatusPublished - 2016

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