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Letter
Nature Physics 2, 97–100 (1 February 2006) | doi:10.1038/nphys212
Possible evidence for electromagnons in multiferroic manganites
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Abstract
Magnetodielectric materials are characterized by a strong coupling of the magnetic and dielectric properties and, in rare cases, simultaneously show both magnetic and polar order. Among other multiferroics, TbMnO3 and GdMnO3 reveal a strong magneto–dielectric coupling and as a consequence fundamentally different spin excitations exist: electro-active magnons (or electromagnons), spin waves that can be excited by a.c.|[nbsp]|electric fields.
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