High mobility half-metallicity in the (LaMnO3)2/(SrTiO3)8 superlattice
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High mobility half-metallicity in the (LaMnO3)2 (SrTiO3)8 superlattice.pdf
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ArticleKAUST Department
Computational Physics and Materials Science (CPMS)Material Science and Engineering Program
Physical Science and Engineering (PSE) Division
Date
2013-01-28Permanent link to this record
http://hdl.handle.net/10754/315744
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First principles calculations have been performed to investigate the LaMnO3/SrTiO3 superlattice. Structural relaxation within the generalized gradient approximation results in no significant tiltings or rotations of oxygen octahedra, but in distinct distortions in the SrTiO3 region. Taking into account the onsite Coulomb interaction, we find that the Mn spins order ferromagnetically, in contrast to the antiferromagnetic state of bulk LaMnO3. Most importantly, the interface strain combined with charge transfer across the interface induces half-metallicity within the MnO2 layers. The superlattice is particulary interesting for spintronics applications because the half-metallic states are characterized by an extraordinary high mobility.Citation
Cossu F, Singh N, Schwingenschlögl U (2013) High mobility half-metallicity in the (LaMnO3)2/(SrTiO3)8 superlattice. Appl Phys Lett 102: 042401. doi:10.1063/1.4789506.Publisher
AIP PublishingJournal
Applied Physics Lettersae974a485f413a2113503eed53cd6c53
10.1063/1.4789506