Indirect 5d-mediated exchange dominates in CsCeSe2, superexchange dominates in RbCeO2, and both contribute equally in KCeS2, with calculated spin Hamiltonians yielding magnetic excitation spectra in good agreement with experiment.
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First-principles calculations map the effect of individual infrared-active phonon modes on the magnetic exchange parameters of Y3Fe5O12 via changes in Fe-O-Fe geometry.
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5d-mediated indirect exchange and effective spin Hamiltonians in Ce triangular-lattice delafossites
Indirect 5d-mediated exchange dominates in CsCeSe2, superexchange dominates in RbCeO2, and both contribute equally in KCeS2, with calculated spin Hamiltonians yielding magnetic excitation spectra in good agreement with experiment.
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Phonon-driven tuning of exchange interactions in Y3Fe5O12
First-principles calculations map the effect of individual infrared-active phonon modes on the magnetic exchange parameters of Y3Fe5O12 via changes in Fe-O-Fe geometry.