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Signatures of a two-dimensional ferromagnetic electron gas at the La_(0.7)Sr_(0.3)MnO_(3)/SrTiO_(3) interface arising from orbital reconstruction

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Nemes, Norbert Marcel and Calderón, M. J. and Beltrán Jiménez, José and Bruno, F. Y. and Garcia Barriocanal, Javier and Sefrioui, Zouhair and León Yebra, Carlos and García Hernández, M. and Muñoz, M. C. and Brey, L. and Santamaría Sánchez-Barriga, Jacobo (2014) Signatures of a two-dimensional ferromagnetic electron gas at the La_(0.7)Sr_(0.3)MnO_(3)/SrTiO_(3) interface arising from orbital reconstruction. Advanced materials, 26 (44). pp. 7516-7520. ISSN 0935-9648

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Official URL: http://dx.doi.org/10.1002/adma.201402829




Abstract

The magnetoresistance of La0.7Sr0.3MnO3/SrTiO3La0.7Sr0.3MnO3/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.


Item Type:Article
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© 2014 WILEY-VCH Verlag GmbH & Co. We acknowledge funding from MINECO-Spain through grants FIS2012–33521, MAT2011–27470-C02–01, MAT2011–27470-C02–02, MAT2012–38045-C04–04 and CSD2009–00013. JGB acknowledges funding by the 'Ramon y Cajal' programme.

Uncontrolled Keywords:Anisotropic magnetoresistance; Thin films; Oxides; Superlattices; Transport; Surface; Order.
Subjects:Sciences > Physics > Electricity
Sciences > Physics > Electronics
ID Code:30691
Deposited On:09 Jun 2015 10:52
Last Modified:10 Dec 2018 14:57

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