Signatures of a two‐dimensional ferromagnetic electron gas at the La0.7Sr0.3MnO3/SrTiO3 interface arising from orbital reconstruction
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2014
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Wiley
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Nemes, N.M., Calderón, M.J., Beltrán, J.I., Bruno, F.Y., García-Barriocanal, J., Sefrioui, Z., León, C., García-Hernández, M., Muñoz, M.C., Brey, L. and Santamaría, J. (2014), Signatures of a Two-Dimensional Ferromagnetic Electron Gas at the La0.7Sr0.3MnO3/SrTiO3 Interface Arising From Orbital Reconstruction. Adv. Mater., 26: 7516-7520. https://doi.org/10.1002/adma.201402829
Abstract
The magnetoresistance of La0.7Sr0.3MnO3/SrTiO3 superlattices with magnetic field rotating out-of-plane shows unexpected peaks for in-plane fields. Resistivity calculations with spin–orbit coupling reveal that orbital reconstruction at the manganite interface leads to a 2D ferromagnetic electron gas coupled antiparallel to the manganite “bulk”. These orbital and magnetic reconstructions are supported by X-ray linear dichroism and ab initio calculations.