Journal
EPL
Volume 100, Issue 1, Pages -Publisher
EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY
DOI: 10.1209/0295-5075/100/17005
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Funding
- Chinese National Fundamental Research Program [2011CB921200]
- National Natural Science Funds for Distinguished Young Scholars
- Temple University
- NICS [TG-DMR120045]
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First-principles calculations are carried out for CaMnO3/BaTiO3 short-period superlattices with epitaxial strain corresponding to growth on a NdGaO3 substrate. The ferroelectricity and antiferrodistortion are analyzed under different magnetic orderings. It reveals that MnO6 octohedral rotation is greatly suppressed at the interfaces, which effectively increases the spin-polar phonon coupling in CaMnO3. Besides the conventional epitaxial-strain method, this mechanism provides an alternative way in engineering the spin-lattice coupling materials for an enhanced functionality. Copyright (C) EPLA, 2012
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