Application of Raman microscopy for spin-phonon coupling and magnon excitation study in nanocrystals
نویسنده
چکیده
There is a wild variety of Raman scattering techniques which may be used for characterization of phononphonon and spin-phonon interaction in nanocrystals. For magnetic nanocrystals, Raman microscopy is a useful tool to probe the spin-phonon coupling and exchange energy between antiferromagnetic next-nearestneighboring magnons in nanocrystals below the Néel temperature. This study shows that multi-magnon configurations were determined from the confocal Raman scattering factor, revealing a relative energy state that correlated with superexchange coupling strength.
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تاریخ انتشار 2012