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- Lee, Jun Hee
- Quantum Materials for Energy Conversion Lab.
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Epitaxial-Strain-Induced Multiferroicity in SrMnO3 from First Principles
- Author(s)
- Lee, JunHee, Rabe, Karin M.
- Issued Date
- 2010-05
- Citation
- PHYSICAL REVIEW LETTERS, v.104, no.20, pp.207204
- Abstract
- First-principles calculations reveal a large spin-phonon coupling in cubic SrMnO3, with ferromagnetic ordering producing a polar instability. Through combination of this coupling with the strain-polarization coupling characteristic of perovskites, the bulk antiferromagnetic-paraelectric ground state is driven to a previously unreported multiferroic ferroelectric-ferromagnetic state by increasing epitaxial strain. This state has a computed P-s > 54 mu C/cm(2) and magnetic T-c > 92 K. Large mixed magnetic-electric-elastic responses are predicted in the vicinity of the phase boundaries
- Publisher
- AMER PHYSICAL SOC
- ISSN
- 0031-9007
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