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Electromagnons in multiferroic YMn2O5 and TbMn2O5open access
- Issue Date
- Jan-2007
- Publisher
- AMERICAN PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v.98, no.2
- Journal Title
- PHYSICAL REVIEW LETTERS
- Volume
- 98
- Number
- 2
- ISSN
- 0031-9007
1079-7114
- Abstract
- Based on temperature dependent far infrared transmission spectra of YMn2O5 and TbMn2O5 single crystals, we report the observation of electric dipole-active magnetic excitations, or electromagnons, in these multiferroics. Electromagnons are found to be directly responsible for the steplike anomaly of the static dielectric constant at the commensurate-incommensurate magnetic transition and are the origin of the colossal magneto-dielectric effect reported in these multiferroics.
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Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
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