Redox-Induced Gating of the Exchange Interactions in a Single Organic Diradical

Journal article (2017)

Authors

R. Gaudenzi QN/van der Zant Lab - AS , Kavli institute of nanoscience Delft
J. de Bruijckere Kavli institute of nanoscience Delft, QN/van der Zant Lab - AS
Daniel Reta Universitat Politecnica de Catalunya
Iberio de P.R. Moreira Universitat Politecnica de Catalunya
Concepcio Rovira Universitat Autònoma de Barcelona
Jaume Veciana Universitat Autònoma de Barcelona
H.S.J. van der Zant Kavli institute of nanoscience Delft, QN/van der Zant Lab - AS
E. Burzuri Linares QN/van der Zant Lab - AS , Kavli institute of nanoscience Delft
Research Group
QN/van der Zant Lab (AS) (TU Delft)
Copyright: © 2017 R. Gaudenzi, J. de Bruijckere, Daniel Reta, Iberio de P.R. Moreira, Concepcio Rovira, Jaume Veciana, H.S.J. van der Zant, E. Burzuri Linares
DOI: https://doi.org/10.1021/acsnano.7b01578
More Info
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Published Date

2017

Language

English

Faculty

Applied Sciences

Department

QN/Quantum Nanoscience

Research Group

QN/van der Zant Lab

Abstract

Embedding a magnetic electroactive molecule in a three-terminal junction allows for the fast and local electric field control of magnetic properties desirable in spintronic devices and quantum gates. Here, we provide an example of this control through the reversible and stable charging of a single all-organic neutral diradical molecule. By means of inelastic electron tunnel spectroscopy we show that the added electron occupies a molecular orbital distinct from those containing the two radical electrons, forming a spin system with three antiferromagnetically coupled spins. Changing the redox state of the molecule therefore switches on and off a parallel exchange path between the two radical spins through the added electron. This electrically controlled gating of the intramolecular magnetic interactions constitutes an essential ingredient of a single-molecule quantum gate.