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Title

Controlled spin switching in a metallocene molecular junction

AuthorsOrmaza, Maider; Abufager, Paula; Verlhac, Benjamin; Bachellier, Nicolas; Bocquet, Marie-Laure; Lorente, Nicolás ; Limot, Laurent
Issue Date2017
PublisherNature Publishing Group
CitationNature Communications 8: 1974 (2017)
AbstractThe active control of a molecular spin represents one of the main challenges in molecular spintronics. Up to now spin manipulation has been achieved through the modification of the molecular structure either by chemical doping or by external stimuli. However, the spin of a molecule adsorbed on a surface depends primarily on the interaction between its localized orbitals and the electronic states of the substrate. Here we change the effective spin of a single molecule by modifying the molecule/metal interface in a controlled way using a low-temperature scanning tunneling microscope. A nickelocene molecule reversibly switches from a spin 1 to 1/2 when varying the electrode-electrode distance from tunnel to contact regime. This switching is experimentally evidenced by inelastic and elastic spin-flip mechanisms observed in reproducible conductance measurements and understood using first principle calculations. Our work demonstrates the active control over the spin state of single molecule devices through interface manipulation.
Publisher version (URL)https://doi.org/10.1038/s41467-017-02151-6
URIhttp://hdl.handle.net/10261/176520
Identifiersdoi: 10.1038/s41467-017-02151-6
e-issn: 2041-1723
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