journal article·2017-06-27Open access

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

Rocco Gaudenzi, Joeri de Bruijckere, Daniel Reta, Ibério de P. R. Moreira, Concepció Rovira, Jaume Veciana, Herre S. J. van der Zant, Enrique Burzurí

ACS Nano· Volume 11· Issue 6

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 [Formula: see text] quantum gate.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Magnetism in coordination complexes · Molecular Junctions and Nanostructures · Lanthanide and Transition Metal Complexes

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Kavli Institute of Nanoscience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands

Departament de Ciència de Materials i Química Física & Institut de Química Teòrica i Computacional (IQTCUB), Universitat de Barcelona, C/Martı́ i Franquès 1, 08028 Barcelona, Spain

Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) and CIBER-BBN, Campus de la UAB, 08193, Bellaterra, Spain

Funding

FP7 Information and Communication Technologies · Stichting voor Fundamenteel Onderzoek der Materie · Ministerio de Econom?a y Competitividad · Centro de Investigaci?n Biom?dica en Red de Salud Mental · Generalitat de Catalunya · Ministerie van Onderwijs, Cultuur en Wetenschap · H2020 European Research Council · Nederlandse Organisatie voor Wetenschappelijk Onderzoek

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