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Islam, Zixin Nie","submitted_at":"2013-12-14T05:31:50Z","abstract_excerpt":"We report x-ray resonant magnetic scattering (XRMS) and resonant inelastic x-ray scattering (RIXS) studies of epitaxially-strained $\\mathrm{Sr_2IrO_4}$ thin films. The films were grown on $\\mathrm{SrTiO_3}$ and $\\mathrm{(LaAlO_3)_{0.3}(Sr_2AlTaO_6)_{0.7}}$ substrates, under slight tensile and compressive strains, respectively. Although the films develop a magnetic structure reminiscent of bulk $\\mathrm{Sr_2IrO_4}$, the magnetic correlations are extremely anisotropic, with in-plane correlation lengths significantly longer than the out-of-plane correlation lengths. 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