Observation of chiral spin fluctuations in insulating planar cuprates.
Observation of chiral spin fluctuations in insulating planar cuprates.
复制标题
绝缘平面铜酸盐中手性自旋波动的观察。
DOI：
10.1103/physrevlett.67.3864
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发表时间：
1991
影响因子：
8.6
通讯作者：
Cheong
中科院分区：
文献类型：
--
作者：
Sulewski;Fleury;Lyons;Cheong
最近的拉曼散射理论在哈伯德模型预测散射的A2对称性所产生的手征自旋波动。在掺杂的平面铜氧化物中，手性自旋涨落被推测在建立正常态性质中起着核心作用。除了在B 1、A1和B 2对称性中的自旋涨落散射外，我们还在这里报道了在A2对称性的非弹性散射光中出现的动态手征自旋涨落的直接观察
A recent theory of Raman scattering in the Hubbard model predicts scattering of A 2 symmetry arising from chiral spin fluctuations. In the doped planar cuprates, chiral spin fluctuations have been speculated to play a central role in establishing the normal-state properties. In addition to spin fluctuation scattering in the B 1 , A 1 , and B 2 symmetries, we report here the direct observation of dynamic chiral spin fluctuations, appearing in the inelastically scattered light of A 2 symmetry