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Coupled magnetic–elastic and metal–insulator transition in epitaxially strained SrMnO(3)/BaMnO(3) superlattices
The spin–phonon coupling and the effects of strain on the ground-state phases of artificial SrMnO(3)/BaMnO(3) superlattices were systematically investigated using first-principles calculations. The results confirm that this system has antiferromagnetic order and an intrinsic ferroelectric polarisati...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9088842/ https://www.ncbi.nlm.nih.gov/pubmed/35558456 http://dx.doi.org/10.1039/c8ra05737k |
Sumario: | The spin–phonon coupling and the effects of strain on the ground-state phases of artificial SrMnO(3)/BaMnO(3) superlattices were systematically investigated using first-principles calculations. The results confirm that this system has antiferromagnetic order and an intrinsic ferroelectric polarisation with the P4mm space group. A tensile epitaxial strain can drive the ground state to another antiferromagnetic–ferroelectric phase and then to a ferromagnetic–ferroelectric phase with the Amm2 space group, accompanied by a change in the ferroelectric polarisation from an out-of-plane direction to an in-plane direction. In contrast, a compressive strain could induce a transition from the antiferromagnetic insulator phase to the ferromagnetic metal phase. |
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