Ubiquitous Charge Order Correlations in High-Temperature Superconducting Cuprates
Ubiquitous Charge Order Correlations in High-Temperature Superconducting Cuprates
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高温超导铜氧化物中普遍存在的电荷顺序相关性
DOI：
10.7566/jpsj.90.111001
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
S. Uchida
中科院分区：
文献类型：
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作者：
S. Uchida
在高转变温度铜氧化物（高tc铜酸盐）中，电荷序的存在早在十年前就被发现了。现在它是一种普遍观察到的有序，就像铜的反铁磁性和超导有序一样。电荷顺序根据材料的不同以不同的形式出现，并且在相图中与其他顺序重叠。由于这种多样性和复杂性，电荷顺序是否与超导性和神秘的赝隙现象有直接关系尚不清楚。然而，近年来的研究进展已经成功地揭示了电荷顺序及其波动的普遍方面。结果表明，电荷顺序与超导性是相容的，其涨落具有与赝隙相当的高起始温度和高能量尺度。电荷序相关可能是产生赝隙和可能通过与自旋和配对相关协同产生高tc超导性所不可缺少的。
The presence of charge order in high-transition-temperature copper oxides (high-Tc cuprates) was identified a decade ago. Now it is a universally observed order like the antiferromagnetic and the superconducting orders of the cuprates. The charge order shows up in various forms depending on materials, and it overlaps other orders in the phase diagram. Because of this diversity and complexity it has been far from clear whether or not the charge order has a direct relevance to superconductivity and to the mysterious pseudogap phenomenon. However, the research development in the last few years has been successful in revealing universal aspects of the charge order and its fluctuations. It turns out that the charge order is compatible with superconductivity, and that its fluctuations have high onset temperature and high energy scale comparable to those of the pseudogap. The charge order correlations might be indispensable for creating the pseudogap and possibly generating high-Tc superconductivity by collaborating with spin and pairing correlations.