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Fernandez-Baca, Jinchen Wang, Masaaki Matsuda, Songxue Chi, Xiaoping Wang","submitted_at":"2015-10-26T15:44:25Z","abstract_excerpt":"We use single-crystal neutron diffraction to determine the crystal structure symmetry and the magnetic evolution in the rhodium doped iridates $\\rm Sr_2Ir_{1-x}Rh_{x}O_4$ ($0\\leq x \\leq 0.16$). Throughout this doping range, the crystal structure retains a tetragonal symmetry (space group $I4_1/a$) with two distinct magnetic Ir sites in the unit cell forming staggered $\\rm IrO_6$ rotation. Upon Rh doping, the magnetic order is suppressed and the magnetic moment of Ir$^{4+}$ is reduced from 0.21 $\\rm \\mu_B$/Ir for $x=0$ to 0.18 $\\rm \\mu_B$/Ir for $x=0.12$. 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