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Physical review B
We present a combined study of Ni K-edge resonant x-ray scattering and density functional calculations to probe and distinguish electronically driven ordering and lattice distortions in nickelate heterostructures. We demonstrate that due to the low crystal symmetry, contributions from structural distortions can contribute significantly to the energy-dependent Bragg peak intensities of a bond-ordered NdNiO_3 reference film. For a LaNiO_3-LaAlO_3 superlattice that exhibits magnetic order, wedoi:10.1103/physrevb.93.165121 fatcat:74oaik46u5bvdd2dxicpmhzuwe