Field-induced interplanar magnetic correlations in the high-temperature superconductor La1.88Sr0.12CuO4
Field-induced interplanar magnetic correlations in the high-temperature superconductor La1.88Sr0.12CuO4
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高温超导体La1.88Sr0.12CuO4中的场感面间磁关联
DOI：
10.1103/physrevb.91.174507
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发表时间：
2015
影响因子：
3.7
通讯作者：
K
中科院分区：
文献类型：
--
作者：
Romer;AT; Ray;PJ; Jacobsen;H; Udby;L; Andersen;BM; Bertelsen;M; Holm;SL; Christensen;NB; Toft-Petersen;R; Skoulatos;M; Laver;M; Schneidewind;A; Link;P; Oda;M; Ido;M;Momono;N; Lefmann;K
本文介绍了高温超导体(K)面间磁关联的中子散射研究。在垂直于平面的磁场中和不同冷却条件下的零场中研究了这种关联。我们发现，磁场的作用是增加了所有离面波矢量值的磁散射信号，表明磁矩总体上增加了。此外，在磁场存在的情况下，铜氧化物平面之间的弱关联也会发生。在以前关于磁散射场效应的报告中没有考虑到这一影响，因为通常只对其进行了探测。有趣的是，淬火冷却样品的结果与施加磁场得到的结果相似。最后，无公度峰位置作为函数的小变化提供了证据，证明无公度信号与来自我们晶体中的主次主次结构孪晶的磁散射是孪生的，分别在偶数和奇数值处显示峰。
We present neutron-scattering studies of the interplanar magnetic correlations in the high-temperature superconductor(K). The correlations are studied both in a magnetic field applied perpendicular to theplanes, and in zero field under different cooling conditions. We find that the effect of the magnetic field is to increase the magnetic scattering signal at all values of the out-of-plane wave vector, indicating an overall increase of the magnetic moments. In addition, weak correlations between the copper oxide planes develop in the presence of a magnetic field. This effect is not taken into account in previous reports on the field effect of magnetic scattering, since usually onlyis probed. Interestingly, the results of quench-cooling the sample are similar to those obtained by applying a magnetic field. Finally, a small variation of the incommensurate peak position as a function ofprovides evidence that the incommensurate signal is twinned with the magnetic scattering from the dominant and subdominant structural twin displaying peaks at even and odd values of, respectively, in our crystal.