Journal
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
Volume 7, Issue 13, Pages 2310-2315Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.6b01112
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Funding
- CNRS
- ANR Grant [ANR-11-LABX-0058 NIE]
- Franco-German university
- GENCI-CINES Grant [2015-gem1100]
- Institut Carnot MICA's Spinterface grant
- Agence Nationale de la Recherche (ANR) [ANR-11-LABX-0058] Funding Source: Agence Nationale de la Recherche (ANR)
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A high spin polarization of states around the Fermi level, E-F, at room temperature has been measured in the past at the interface between a few molecular candidates and the ferromagnetic metal Co. Is this promising property for spintronics limited to these candidates? Previous reports suggested that certain conditions, such as strong ferromagnetism, i.e., a fully occupied spin-up d band of the ferromagnet, or the presence of pi bonds on the molecule, i.e., molecular conjugation, needed to be met. What rules govern the presence of this property? We have performed spin-resolved photoemission spectroscopy measurements on a variety of such interfaces. We find that this property is robust against changes to the molecule and ferromagnetic metal's electronic properties, including the aforementioned conditions. This affirms the generality of highly spin-polarized states at the interface between a ferromagnetic metal and a molecule and augurs bright prospects toward integrating these interfaces within organic spintronic devices.
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