Vibron-assisted spin excitation in a magnetically anisotropic molecule

N. Bachellier, B. Verlhac (), L. Garnier, J. Zaldívar, C. Rubio-Verdú, P. Abufager, M. Ormaza, D.-J. Choi, M.-L. Bocquet, J. I. Pascual, N. Lorente and L. Limot ()
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N. Bachellier: Université de Strasbourg, CNRS, IPCMS
B. Verlhac: Université de Strasbourg, CNRS, IPCMS
L. Garnier: Université de Strasbourg, CNRS, IPCMS
J. Zaldívar: CIC nanoGUNE
C. Rubio-Verdú: CIC nanoGUNE
P. Abufager: Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) and Universidad Nacional de Rosario
M. Ormaza: Université de Strasbourg, CNRS, IPCMS
D.-J. Choi: Centro de Física de Materiales (CFM MPC) CSIC-EHU
M.-L. Bocquet: PSL University, Sorbonne Universités, CNRS
J. I. Pascual: CIC nanoGUNE
N. Lorente: Centro de Física de Materiales (CFM MPC) CSIC-EHU
L. Limot: Université de Strasbourg, CNRS, IPCMS

Nature Communications, 2020, vol. 11, issue 1, 1-7

Abstract: Abstract The electrical control and readout of molecular spin states are key for high-density storage. Expectations are that electrically-driven spin and vibrational excitations in a molecule should give rise to new conductance features in the presence of magnetic anisotropy, offering alternative routes to study and, ultimately, manipulate molecular magnetism. Here, we use inelastic electron tunneling spectroscopy to promote and detect the excited spin states of a prototypical molecule with magnetic anisotropy. We demonstrate the existence of a vibron-assisted spin excitation that can exceed in energy and in amplitude a simple excitation among spin states. This excitation, which can be quenched by structural changes in the magnetic molecule, is explained using first-principles calculations that include dynamical electronic correlations.

Date: 2020
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DOI: 10.1038/s41467-020-15266-0

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