S. Calder, G. -X. Cao, M. D. Lumsden, J. W. Kim, Z. Gai, B. C. Sales, D. Mandrus, A. D. Christianson
The layered 5d transition metal oxide Sr2IrO4 has been shown to host a novel Jeff=1/2 Mott spin orbit insulating state with antiferromagnetic ordering, leading to comparisons with the layered cuprates and consequently intriguing doping possibilities. Here we study the effect of substituting Mn for Ir in single crystals of Sr2Ir0.9Mn0.1O4. Through an investigation involving bulk measurements and resonant x-ray scattering we observe a new long range magnetic structure emerge upon doping with a reduction in the ordering temperature. The strong enhancement of the magnetic x-ray scattering intensity at the L3 edge compared to the L2 edge indicates that the Jeff = 1/2 state is robust and capable of hosting a variety of ground states.
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http://arxiv.org/abs/1208.2229
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