Journal
NANO LETTERS
Volume 18, Issue 8, Pages 4659-4663Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.8b00570
Keywords
Organic spintronics; organic-inorganic interfaces; exchange bias; molecular magnetism; ferromagnetic resonance
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Funding
- Institut Carnot MICA's Spinterface grant
- Agence Nationale de la Recherche [ANR-09-JCJC-0137, ANR-11-LABX-0058 NIE]
- International Center for Frontier Research in Chemistry
- Franco-German University
- Iraqi Ministry of Higher Education
- Campus France
- Agence Nationale de la Recherche (ANR) [ANR-09-JCJC-0137] Funding Source: Agence Nationale de la Recherche (ANR)
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We performed ferromagnetic resonance and magnetometry experiments to clarify the relationship between two reported magnetic exchange effects arising from interfacial spin-polarized charge transfer in ferromagnetic metal (FM)/molecule bilayers: the magnetic hardening effect and spinterface-stabilized molecular spin chains. To disentangle these effects, we tuned the metal phthalocyanine molecule central site's magnetic moment to enhance or suppress the formation of spin chains in the molecular film. We find that both effects are distinct, and additive. In the process, we extend the list of FM/molecule candidate pairs that are known to generate magnetic exchange effects, experimentally confirm the predicted increase in anisotropy upon molecular adsorption, and show that spin chains within the molecular film can enhance magnetic exchange. Our results confirm, as an echo to progress regarding inorganic spintronic tunnelling, that spintronic tunnelling across structurally ordered organic barriers has been reached through previous magnetotransport experiments.
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