Ferroelectricity induced by acentric spin-density waves in YMn(2)O(5)open access
- Authors
- Chapon, L.C.; Radaelli, P.G.; Blake, G.R.; Park, S.; Cheong, S.-W.
- Issue Date
- Mar-2006
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v.96, no.9
- Journal Title
- PHYSICAL REVIEW LETTERS
- Volume
- 96
- Number
- 9
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/57391
- DOI
- 10.1103/PhysRevLett.96.097601
- ISSN
- 0031-9007
1079-7114
- Abstract
- The commensurate and incommensurate magnetic structures of the magnetoelectric system YMn(2)O(5), as determined from neutron diffraction, were found to be spin-density waves lacking a global center of symmetry. We propose a model, based on a simple magnetoelastic coupling to the lattice, which enables us to predict the polarization based entirely on the observed magnetic structure. Our data accurately reproduce the temperature dependence of the spontaneous polarization, particularly its sign reversal at the commensurate-incommensurate transition.
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Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
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