Second-harmonic EFM-EPR is observed for the first time in a polynuclear spin triangle and quantitatively matches isotropic-exchange modulation under Jahn-Teller symmetry lowering; an unexpected first-harmonic signal remains incompletely explained.
Chemical Physics , volume =
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Second-harmonic signal in electric-field-modulated EPR spectra of Fe3 spin triangles
Second-harmonic EFM-EPR is observed for the first time in a polynuclear spin triangle and quantitatively matches isotropic-exchange modulation under Jahn-Teller symmetry lowering; an unexpected first-harmonic signal remains incompletely explained.