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Polyanisotropic Magnetoelectric Coupling in an Electrically Controlled Molecular Spin Qubit.
Robert, Jérôme; Parizel, Nathalie; Turek, Philippe; Boudalis, Athanassios K.
Afiliação
  • Robert J; Institut de Chimie de Strasbourg (UMR 7177, CNRS-Unistra) , Université de Strasbourg , 4 rue Blaise Pascal , CS 90032, F-67081 Strasbourg , France.
  • Parizel N; Sorbonne Université , CNRS, Laboratoire Jean Perrin, LJP , F-75005 Paris , France.
  • Turek P; Institut de Chimie de Strasbourg (UMR 7177, CNRS-Unistra) , Université de Strasbourg , 4 rue Blaise Pascal , CS 90032, F-67081 Strasbourg , France.
  • Boudalis AK; Institut de Chimie de Strasbourg (UMR 7177, CNRS-Unistra) , Université de Strasbourg , 4 rue Blaise Pascal , CS 90032, F-67081 Strasbourg , France.
J Am Chem Soc ; 141(50): 19765-19775, 2019 Dec 18.
Article em En | MEDLINE | ID: mdl-31762270
ABSTRACT
Two molecular spin qubits are studied with pulsed electron paramagnetic resonance (EPR) spectroscopy under electric fields to assess their magnetoelectric (ME) couplings and electric spin control. [Fe3O(PhCOO)6(py)3]ClO4·py (Fe3) is characterized by strong Dzyaloshinskii-Moriya interactions (DMI) which induce important magnetoanisotropy, whereas the DMI in [Cr3O(PhCOO)6(py)3]ClO4·0.5py (Cr3) is 1-2 orders of magnitude weaker. Fe3 is observed to demonstrate a clear ME effect, whose intensity shows an unprecedented dependence on the molecular orientation within the electric field E (electroanisotropy) and on the relative orientations of the molecular z axis, the Zeeman field B0 and E (magnetoelectric anisotropy). The electric control in Fe3 is shown to be coherent, and the ME effect exhibits complex dynamics characterized by saturation and oscillatory effects. On the other hand, Cr3 exhibits no discernible ME effect, which correlates well with its negligible DMI.

Texto completo: 1 Base de dados: MEDLINE Idioma: En Revista: J Am Chem Soc Ano de publicação: 2019 Tipo de documento: Article País de afiliação: França

Texto completo: 1 Base de dados: MEDLINE Idioma: En Revista: J Am Chem Soc Ano de publicação: 2019 Tipo de documento: Article País de afiliação: França