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

S. Datta; O. Waldmann; A. D. Kent; V. A. Milway; L. K. Thompson; S. Hill

doi:10.1103/PhysRevB.76.052407

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

S. Datta, O. Waldmann, A. D. Kent, V. A. Milway, L. K. Thompson, S. Hill

Research output: Contribution to journal › Article › peer-review

Abstract

High-frequency electron paramagnetic resonance (EPR) studies of the antiferromagnetic Mn-[3×3] molecular grid clearly reveal a breaking of the ΔS=0 selection rule, providing direct evidence for the mixing of spin wave functions (S mixing) induced by the comparable exchange and magnetoanisotropy 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.

Original language	English (US)
Article number	052407
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	76
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevB.76.052407
State	Published - Aug 16 2007

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.76.052407

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AU - Waldmann, O.

AU - Kent, A. D.

AU - Milway, V. A.

AU - Thompson, L. K.

AU - Hill, S.

PY - 2007/8/16

Y1 - 2007/8/16

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AB - High-frequency electron paramagnetic resonance (EPR) studies of the antiferromagnetic Mn-[3×3] molecular grid clearly reveal a breaking of the ΔS=0 selection rule, providing direct evidence for the mixing of spin wave functions (S mixing) induced by the comparable exchange and magnetoanisotropy 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.

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

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