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Magnetic Excitations in the Low-Temperature Ferroelectric Phase of Multiferroic YMn2O5 Using Inelastic Neutron Scattering
- Authors
- Kim, J. -H.; van der Vegte, M. A.; Scaramucci, A.; Artyukhin, S.; Chung, J. -H.; Park, S.; Cheong, S-W.; Mostovoy, M.; Lee, S. -H.
- Issue Date
- 25-Aug-2011
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v.107, no.9
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW LETTERS
- Volume
- 107
- Number
- 9
- ISSN
- 0031-9007
- Abstract
- We studied magnetic excitations in a low-temperature ferroelectric phase of the multiferroic YMn2O5 using inelastic neutron scattering (INS). We identify low-energy magnon modes and establish a correspondence between the magnon peaks observed by INS and electromagnon peaks observed in optical absorption [A. B. Sushkov et al., Phys. Rev. Lett. 98, 027202 (2007).]. Furthermore, we explain the microscopic mechanism, which results in the lowest-energy electromagnon peak, by comparing the inelastic neutron spectral weight with the polarization in the commensurate ferroelectric phase.
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Related Researcher
- Chung, Jae Ho
- College of Science (Department of Physics)