Modulating the Ferromagnet/Molecule Spin Hybridization Using an Artificial Magnetoelectric

Michał Studniarek 1 Salia Cherifi-Hertel 2, 3, 4 Etienne Urbain 4 Ufuk Halisdemir 4 Rémi Arras 5 Beata Taudul 4 Filip Schleicher 4 Marie Hervé Charles-Henri Lambert 6 Abbass Hamadeh 7 Loic Joly 4 Fabrice Scheurer 4 Guy Schmerber 4 Victor da Costa Bénédicte Warot-Fonrose Cécile Marcelot 8 Olivia Mauguin 9 Ludovic Largeau 9 Florian Leduc 10 Fadi Choueikani 11 Edwige Otero 12 Wulf Wulfhekel 13 Jacek Arabski 4 Philippe Ohresser 12 Wolfgang Weber 14 Eric Beaurepaire 4 Samy Boukari 4 Martin Bowen 4
Abstract : Spin-polarized charge transfer at the interface between a ferromagnetic (FM) metal and a molecule can lead to ferromagnetic coupling and to a high spin polarization at room temperature. The magnetic properties of these interfaces can not only alter those of the ferromagnet but can also stabilize molecular spin chains with interesting opportunities toward quantum computing. With the aim to enhance an organic spintronic device’s functionality, external control over this spin polarization may thus be achieved by altering the ferromagnet/ molecule interface’s magnetic properties. To do so, the magnetoelectric properties of an underlying ferroelectric/ferromagnetic interface are utilized. Switching the ferroelectric polarization state of a PbZr0.2Ti0.8O3 (PZT) bottom layer within a PZT/Co/FePc-based (Pc - phthalocyanine) device alters the X-ray magnetic circular dichroism of the Fe site within the phthalocyanine molecular top layer. Thus, how to electrically alter the magnetic properties of an interface with high spin polarization at room temperature is demonstrated. This expands electrical control over spin-polarized FM/molecule interfaces, which is first demonstrated using ferroelectric molecules, to all molecular classes.
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https://hal.archives-ouvertes.fr/hal-02354239
Contributor : Salia Cherifi-Hertel <>
Submitted on : Thursday, November 7, 2019 - 4:11:37 PM
Last modification on : Sunday, November 10, 2019 - 1:14:29 AM

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Michał Studniarek, Salia Cherifi-Hertel, Etienne Urbain, Ufuk Halisdemir, Rémi Arras, et al.. Modulating the Ferromagnet/Molecule Spin Hybridization Using an Artificial Magnetoelectric. Advanced Functional Materials, Wiley, 2017, 27 (27), pp.1700259. ⟨10.1002/adfm.201700259⟩. ⟨hal-02354239⟩

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