Spin stripe order and superconductivity in layered transition metal oxides
Spin stripe order and superconductivity in layered transition metal oxides
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DOI：
10.1088/0953-8984/16/40/004
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发表时间：
2004-09
期刊：
影响因子：
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通讯作者：
H. Klauss
中科院分区：
文献类型：
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作者：
H. Klauss
在我们提出的这项工作中，？研究层状镍酸盐和铜酸盐体系中自旋条纹顺序的SR实验。讨论了零场（ZF）中静态自旋条纹序的特征. SR实验。在镍酸盐La1.67Sr0.33NiO4以及分离的信号从反铁磁（AF）域和畴壁被确定，而在Nd和Eu掺杂的La2？xSrxCuO_4体系中发现了一条不对称展宽的谱线，在两个体系中都观察到了电荷条纹的缓慢起伏。通过改变稀土和Sr掺杂水平在La2？x？yREySrxCuO_4的研究证明了静态自旋条纹序与低温四方相（LTT）结构畸变的强相关性，并论证了静态自旋条纹序与体超导性的竞争。最后，在电子掺杂的高TC铜酸盐Pr2？xCexCuO_4。
In this work we present ?SR experiments to examine spin stripe order in layered nickelate and cuprate systems. We discuss the signature of static spin stripe order in a zero field (ZF) ?SR experiment. In the nickelate La1.67Sr0.33NiO4 well separated signals from the antiferromagnetic (AF) domains and the domain walls are identified, whereas in Nd and Eu doped La2?xSrxCuO4 one asymmetrically broadened line is found. In both systems we observe slow fluctuations of the charge stripes. By changing the rare-earth and Sr doping levels in La2?x?yREySrxCuO4 we prove the strong correlation of static spin stripe order with the structural distortion in the low temperature tetragonal (LTT) phase, and demonstrate the competition of static spin stripe order with bulk superconductivity. Finally, evidence for a similar magnetic inhomogeneity in the electron doped high-TC cuprate Pr2?xCexCuO4 is presented.