2010/09/23 by Alejandra Baena, A. Baena, L. Brey +2 · 40 citations
Engineering · Materials Science · Medicine · Physics and Astronomy · #Anatomy #Composite material #Condensed matter physics #Electrical and Thermal Properties of Materials #Electronic and Structural Properties of Oxides #Ferromagnetism #Insulator (electricity) #Interface (matter) #Magnetic and transport properties of perovskites and related materials #Manganite #Materials science #Medicine #Nanotechnology #Physics #Strain (injury) #Thin film #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.83.064424
published in Physical Review B 83(6) (American Physical Society) · 8 pages, 8 figures
arxiv created 2010/09/23 · openalex publication_date 2011/02/28 · arxiv updated 2011/07/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the effect of uniform uniaxial strain on the ground-state electronic configuration of a thin-film manganite. Our model Hamiltonian includes the double exchange, the Jahn-Teller electron-lattice coupling, and the antiferromagnetic superexchange. The strain arises due to the lattice mismatch between an insulating substrate and a manganite, which produces a tetragonal distortion. This is included in the model via a modification of the hopping amplitude and the introduction of an energy splitting between the Mn eg levels. We analyze the bulk properties of half-doped manganites and the electronic reconstruction at the interface between a ferromagnetic and metallic manganite and the insulating substrate. The strain drives an orbital selection modifying the electronic properties and the magnetic ordering of manganites and their interfaces.