2009/09/23 by C. Aruta, C. Adamo, Carolina Adamo +15 · 65 citations
Chemistry · Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Antiferromagnetism #Chemistry #Condensed matter physics #Crystallography #Electronic and Structural Properties of Oxides #Ferromagnetism #Magnetic and transport properties of perovskites and related materials #Materials science #Order (exchange) #Physics #Superlattice #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.80.140405
published in Physical Review B 80(14) (American Physical Society) · accepted for publication as a Rapid Communication in Physical Review B
arxiv created 2009/09/23 · openalex publication_date 2009/10/09 · arxiv updated 2015/05/14 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The magnetic and electronic modifications induced at the interfaces in (SrMnO3)n/(LaMnO3)2n superlattices have been investigated by linear and circular magnetic dichroism in the Mn L2,3 x-ray absorption spectra. Together with theoretical calculations, our data demonstrate that the charge redistribution across interfaces favors in-plane ferromagnetic (FM) order and eg(x2\ensuremath-y2) orbital occupation, in agreement with the average strain. Far from interfaces, inside LaMnO3, electron localization and local strain favor antiferromagnetism (AFM) and eg(3z2\ensuremath-r2) orbital occupation. For n=1 the high density of interfacial planes ultimately leads to dominant FM order forcing the residual AFM phase to be in-plane too, while for n\ensuremath≥5 the FM layers are separated by AFM regions having out-of-plane spin orientation.