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Title: Room-Temperature Spin-Dependent Transport in Metalloporphyrin-Based Supramolecular Wires
Author: Aragonès, Albert C.
Martín-Rodríguez, Alejandro
Aravena, Daniel
Di Palma, Giuseppe
Qian, Wenjie
Puigmartí-Luis, Josep
Aliaga, N. (Núria)
González-Campo, Arántzazu
Díez Pérez, Ismael
Ruiz Sabín, Eliseo
Keywords: Teoria del funcional de densitat
Density functionals
Issue Date: 1-Dec-2021
Publisher: Wiley-VCH
Abstract: Here we present room-temperature spin-dependent charge transport measurements in single-molecule junctions made of metalloporphyrin-based supramolecular assemblies. They display large conductance switching for magnetoresistance in a single-molecule junction. The magnetoresistance depends acutely on the probed electron pathway through the supramolecular wire: those involving the metal center showed marked magnetoresistance effects as opposed to those exclusively involving the porphyrin ring which present nearly complete absence of spin-dependent charge transport. The molecular junction magnetoresistance is highly anisotropic, being observable when the magnetization of the ferromagnetic junction electrode is oriented along the main molecular junction axis, and almost suppressed when it is perpendicular. The key ingredients for the above effect to manifest are the electronic structure of the paramagnetic metalloporphyrin, and the spinterface created at the molecule-electrode contact.
Note: Versió postprint del document publicat a:
It is part of: Angewandte Chemie-International Edition, 2021, vol. 60, num. 49, p. 25958-25965
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ISSN: 1433-7851
Appears in Collections:Articles publicats en revistes (Química Inorgànica i Orgànica)
Publicacions de projectes de recerca finançats per la UE

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