Direct observation of mixing of spin-multiplets in an antiferromagnetic molecular nanomagnet by electron paramagnetic resonance

Abstract

High-frequency electron paramagnetic resonance (EPR) studies of the antiferromagnetic Mn-$[3\times 3]$ molecular grid clearly reveal a breaking of the $\Delta S=0$ selection rule, providing direct evidence for the mixing of spin wavefunctions ($S$-mixing) induced by the comparable exchange and magneto-anisotropy energy scales within the grid. This finding highlights the potential utility of EPR for studies of exchange splittings in molecular nanomagnets, which is normally considered the sole domain of inelastic neutron scattering, thereby offering improved sensitivity and energy resolution.

arXiv comment4 pages, 3 figures. Accepted in Physical Review B

References in corpus (12)

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Cited by in corpus (4)

• Magnetic Cluster Excitations
• Magnetic Quantum Tunneling: Insights from Simple Molecule-Based Magnets
• Tunneling and inversion symmetry in single-molecule magnets: the case of the Mn12 wheel molecule
• Inelastic neutron scattering study and Hubbard model description of the antiferromagnetic tetrahedral molecule Ni4Mo12