title: Phthalocyanine based molecular spintronic devices.
abstract: Molecular spintronics is an effervescent field of research, which aims at combining spin physics and molecular nano-objects. In this article, we show that phthalocyanine molecules integrated in magnetic tunnel junctions (MTJs) can lead to magnetoresistance effects of different origins. We have investigated cobalt and manganese phthalocyanine molecule based magnetic tunnel junctions. CoPc MTJs exhibit both tunneling magnetoresistance (TMR) and tunneling anisotropic magnetoresistance (TAMR) effects of similar magnitude. However, for MnPc MTJs, a giant TAMR dominates with ratios up to ten thousands of percent. Strong features visible in the conductance suggest that spin-flip inelastic electron tunneling processes occur through the Mn atomic chain formed by the MnPc stacks. These results show that metallo-organic molecules could be used as a template to connect magnetic atomic chains or even a single magnetic atom in a solid-state device.
authors.affiliation: Unité Mixte de Physique CNRS/Thales, CNRS, Thales, Univ. Paris-Sud, Université Paris Saclay, 91767 Palaiseau, France. pierre.seneor@cnrs-thales.fr richard.mattana@cnrs-thales.fr and Laboratoire Matériaux et Phénomènes Quantiques, Université Paris Diderot, Sorbonne Paris Cité, MPQ, UMR 7162, CNRS 75205 Paris Cedex 13, France.
authors.forename: C
authors.initials: C
authors.lastname: Barraud
authors.affiliation: Unité Mixte de Physique CNRS/Thales, CNRS, Thales, Univ. Paris-Sud, Université Paris Saclay, 91767 Palaiseau, France. pierre.seneor@cnrs-thales.fr richard.mattana@cnrs-thales.fr.
authors.forename: K
authors.initials: K
authors.lastname: Bouzehouane
authors.affiliation: Unité Mixte de Physique CNRS/Thales, CNRS, Thales, Univ. Paris-Sud, Université Paris Saclay, 91767 Palaiseau, France. pierre.seneor@cnrs-thales.fr richard.mattana@cnrs-thales.fr.
authors.forename: C
authors.initials: C
authors.lastname: Deranlot
authors.affiliation: IPCMS, Université de Strasbourg, CNRS UMR 7504, 23 rue du Loess BP 43, 67034 Strasbourg, France.
authors.forename: D J
authors.initials: DJ
authors.lastname: Kim
authors.affiliation: IPCMS, Université de Strasbourg, CNRS UMR 7504, 23 rue du Loess BP 43, 67034 Strasbourg, France.
authors.forename: R
authors.initials: R
authors.lastname: Rakshit
authors.affiliation: IPCMS, Université de Strasbourg, CNRS UMR 7504, 23 rue du Loess BP 43, 67034 Strasbourg, France.
authors.forename: S
authors.initials: S
authors.lastname: Shi
authors.affiliation: IPCMS, Université de Strasbourg, CNRS UMR 7504, 23 rue du Loess BP 43, 67034 Strasbourg, France.
authors.forename: J
authors.initials: J
authors.lastname: Arabski
authors.affiliation: IPCMS, Université de Strasbourg, CNRS UMR 7504, 23 rue du Loess BP 43, 67034 Strasbourg, France.
authors.forename: M
authors.initials: M
authors.lastname: Bowen
authors.affiliation: IPCMS, Université de Strasbourg, CNRS UMR 7504, 23 rue du Loess BP 43, 67034 Strasbourg, France.
authors.forename: E
authors.initials: E
authors.lastname: Beaurepaire
authors.affiliation: IPCMS, Université de Strasbourg, CNRS UMR 7504, 23 rue du Loess BP 43, 67034 Strasbourg, France.
authors.forename: S
authors.initials: S
authors.lastname: Boukari
authors.affiliation: Unité Mixte de Physique CNRS/Thales, CNRS, Thales, Univ. Paris-Sud, Université Paris Saclay, 91767 Palaiseau, France. pierre.seneor@cnrs-thales.fr richard.mattana@cnrs-thales.fr.
authors.forename: F
authors.initials: F
authors.lastname: Petroff
authors.affiliation: Unité Mixte de Physique CNRS/Thales, CNRS, Thales, Univ. Paris-Sud, Université Paris Saclay, 91767 Palaiseau, France. pierre.seneor@cnrs-thales.fr richard.mattana@cnrs-thales.fr.
authors.forename: P
authors.initials: P
authors.lastname: Seneor
authors.affiliation: Unité Mixte de Physique CNRS/Thales, CNRS, Thales, Univ. Paris-Sud, Université Paris Saclay, 91767 Palaiseau, France. pierre.seneor@cnrs-thales.fr richard.mattana@cnrs-thales.fr.
authors.forename: R
authors.initials: R
authors.lastname: Mattana