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首页> 外文期刊>Physica, B. Condensed Matter >Effects of Co doping on antiferromagnetic structure in CeRhIn5
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Effects of Co doping on antiferromagnetic structure in CeRhIn5

机译:Co掺杂对CeRhIn5中反铁磁结构的影响

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摘要

We performed the elastic neutron scattering experiments on the mixed compounds CeRh1-xCoxIn5, and found that doping Co into CeRhIn5 dramatically changes the antiferromagnetic (AF) structure. The incommensurate AF state with the propagation vector of q(h) = (1/2,1/2,similar to 0.3) observed in pure CeRhIn5 is suppressed with increasing x, and new AF states with an incommensurate q(1) = (1/2,1/2,similar to 0.4) and a commensurate q(c) = (1/2,1/2,1/2) modulations simultaneously develop near the AF quantum critical point: x(c)similar to 0.8. These results suggest that the AF correlations with the q(c) and q(1) modulations enhanced in the intermediate Co concentrations may play a crucial role in the evolution of the superconductivity observed above x similar to 0.4.
机译:我们对混合化合物CeRh1-xCoxIn5进行了弹性中子散射实验,发现向CeRhIn5中掺杂Co会极大地改变反铁磁(AF)结构。随着x的增加,在纯CeRhIn5中观察到的传播向量为q(h)=(1 / 2,1 / 2,类似于0.3)的不相称AF状态会随着x的增加而受到抑制,而具有不相称q(1)=( 1 / 2,1 / 2,类似于0.4),并且在AF量子临界点附近同时产生相应的q(c)=(1 / 2,1 / 2,1 / 2)调制:x(c)近似于0.8 。这些结果表明,在中间Co浓度下增强的与q(c)和q(1)调制的AF相关性可能在x上观察到的超导性的演变(类似于0.4)中起关键作用。

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