Colloquium: Identifying the propagating charge modes in doped Mott insulators
Colloquium: Identifying the propagating charge modes in doped Mott insulators
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DOI：
10.1103/revmodphys.82.1719
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发表时间：
2010-01
影响因子：
44.1
通讯作者：
P. Phillips
中科院分区：
文献类型：
--
作者：
P. Phillips
氧化铜陶瓷的高温超导性仍然是一个未解决的问题，因为我们不知道正常状态下的传播自由度是多少。因此，我们不知道配对形成超导凝聚体的弱相互作用自由度是多少。电子不是铜氧化物中的传播自由度，这一点从实验中可以最直接地看出，实验显示了所有能量尺度上的光谱权重重新分布。当然，实际的传播自由度使这种光谱重排最小化。本文综述了紫外-红外混合效应对铜氧化物正常态的影响，如赝能隙、中红外波段、霍尔数与温度的关系、超流密度，以及最近的一个理论进展，该理论进展允许识别掺杂莫特绝缘体中的弱相互作用自由度。在这个理论中，我们展示了如何出现广泛的现象，其中代表的正常状态的铜酸盐，包括$T-$线性电阻率。
High-temperature superconductivity in the copper-oxide ceramics remains an unsolved problem because we do not know what the propagating degrees of freedom are in the normal state. As a result, we do not know what are the weakly interacting degrees of freedom which pair up to form the superconducting condensate. That the electrons are not the propagating degrees of freedom in the cuprates is seen most directly from experiments that show spectral weight redistributions over all energy scales. Of course, the actual propagating degrees of freedom minimize such spectral rearrangements. This review focuses on the range of epxerimental consequences such UV-IR mixings have on the normal state of the cuprates, such as the pseudogap, mid-infrared band, temperature dependence of the Hall number, the superfluid density, and a recent theoretical advance which permits the identification of the weakly interacting degrees of freedom in a doped Mott insulator. Within this theory, we show how the wide range of phenomena which typify the normal state of the cuprates arises including $T-$linear resistivity.