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arXiv 1208.2229cond-mat.str-elcond-mat.mtrl-sci
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Mn掺杂对Sr2IrO4磁结构的影响

Magnetic structural change of Sr2IrO4 upon Mn doping

S. Calder, G. -X. Cao, M. D. Lumsden, J. W. Kim, Z. Gai, B. C. Sales, D. Mandrus, A. D. Christianson

摘要:

层状5d过渡金属氧化物Sr 2 IrO 4已被证明是一种新的杰夫=1/2莫特自旋轨道绝缘态与反铁磁有序,导致与层状铜酸盐的比较。在这里,我们研究的影响,取代Mn为Ir在单晶Sr2Ir0.9Mn0.1O4通过调查,涉及批量测量和共振X射线和中子散射。我们观察到一个新的长程磁结构出现掺杂后,通过重新排序的自旋从基面的c轴与降低排序温度相比,Sr 2 IrO 4。在L3边缘相对于L2边缘的磁性X射线散射强度的强烈增强表明Jeff=1/2状态是稳健的并且能够承载各种基态。

英文摘要:

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. 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 and neutron scattering. We observe a new long range magnetic structure emerge upon doping through a reordering of the spins from the basal plane to the c-axis with a reduced ordering temperature compared to Sr2IrO4. The strong enhancement of the magnetic x-ray scattering intensity at the L3 edge relative to the L2 edge indicates that the Jeff=1/2 state is robust and capable of hosting a variety of ground states.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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