期刊
PHYSICAL REVIEW LETTERS
卷 109, 期 24, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.109.247202
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资金
- MINECO-Spain [MAT2010-18113, MAT2010-10093-E, CSD2007-00041]
- Ramon y Cajal'' program
Our first-principles results show that geometric frustration can be induced in thin films of multiferroic BiFeO3. We find that competing magnetic interactions occur in the so-called supertetragonal phase of this material, which can be grown on strongly compressive substrates. We show that the frustration level can be tuned by appropriately choosing the substrate; in fact, the phase diagram of the films presents a critical line at which the three-dimensional spin order gets annihilated. We argue that these effects are not exclusive to BiFeO3 and predict that they also occur in BiCoO3. DOI: 10.1103/PhysRevLett.109.247202
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