POSSIBLE CHARGE AND/OR SPIN ORDERING IN THE Bi-2212, Y-123 AND La-214 PHASES
POSSIBLE CHARGE AND/OR SPIN ORDERING IN THE Bi-2212, Y-123 AND La-214 PHASES
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Bi-2212、Y-123 和 La-214 相中可能的电荷和/或自旋排序
DOI：
10.1142/s0217979200004039
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发表时间：
2000
影响因子：
1.7
通讯作者：
K. Nagamine
中科院分区：
文献类型：
--
作者：
Y. Koike;M. Akoshima;M. Aoyama;K. Nishimaki;T. Kawamata;T. Adachi;T. Noji;I. Watanabe;S. Ohira;W. Higemoto;K. Nagamine
本文综述了我们最近对Bi-2212和Y-123相的1/8反常以及La-214相过掺杂区的新反常的实验研究。在部分Zn取代的Bi-2212和Y-123相中，我们发现在p（CuO_2平面上每个Cu的空穴浓度）~1/8处超导性（SC）的反常抑制，μ子自旋弛豫（μSR）测量发现Cu自旋之间的磁关联在p~1/8处奇异增强。此外，我们发现在1%Zn取代的La 2-xSrxCu 1-yZnyO 4（LSCZO）单晶中，在x=0.21处SC奇异地受到巨大的抑制，并且从μSR测量中发现，在x=0.21处磁相关也得到增强。这些结果表明，Bi-2212和Y-123相以及La-214相都存在空穴和自旋的动态条纹关联，并且它们容易被少量的Zn钉扎，导致准静态条纹有序和抑制。
Our recent experimental studies on the so-called 1/8 anomaly in the Bi-2212 and Y-123 phases and also on the new anomaly in the overdoped region of the La-214 phase are reviewed. In the partially Zn-substituted Bi-2212 and Y-123 phases, we have found anomalous suppression of superconductivity (SC) at p (the hole concentration per Cu in the CuO2 plane) ~1/8, and it has been found from the muon-spin-relaxation (μSR) measurements that the magnetic correlation between Cu spins is enhanced singularly at p~1/8. Furthermore, we have found giant suppression of SC singularly at x=0.21 in the 1% Zn-substituted single-crystals of La2-xSrxCu1-yZnyO4 (LSCZO), and it has been found from the μSR measurements that the magnetic correlation is also enhanced at x=0.21. These results suggest that the dynamical stripe correlations of holes and spins exist in the Bi-2212 and Y-123 phases as well as in the La-214 phase and that they tend to be pinned by a small amount of Zn, leading to quasi-static stripe order and the suppress...