Manipulation of the magnetic state of a porphyrin-based molecule on gold: From Kondo to quantum nanomagnet via the charge fluctuation regime - IM2NP- UMR 7334 Accéder directement au contenu
Article Dans Une Revue ACS Nano Année : 2023

Manipulation of the magnetic state of a porphyrin-based molecule on gold: From Kondo to quantum nanomagnet via the charge fluctuation regime

Résumé

By moving individual Fe-Porphyrin-based molecules with the tip of Scanning Tunneling Microscope in the vicinity of a Br-atom containing elbow of the herringbone-reconstructed Au(111), we reversibly and continuously control their magnetic state. Several regimes are obtained experimentally and explored theoretically: from the integer spin limit, through intermediate magnetic states with renormalized magnetic anisotropy, until the Kondo-screened regime, corresponding to a progressive increase of charge fluctuations and mixed valency due to an increase in the interaction of the molecular Fe states with the substrate Fermi sea. Our results open a route for the realization, tuning and experimental studies of novel quantum magnetic states in molecule-surface hybrids.
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hal-04040024 , version 1 (23-05-2023)

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Yingzheng Gao, Sergio Vlaic, Tommaso Gorni, Luca De’ Medici, Sylvain Clair, et al.. Manipulation of the magnetic state of a porphyrin-based molecule on gold: From Kondo to quantum nanomagnet via the charge fluctuation regime. ACS Nano, 2023, 17 (10), pp.9082-9089. ⟨10.1021/acsnano.2c12223⟩. ⟨hal-04040024⟩
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