Charge Order and Peak-dip-hump Structure in Pseudogap Phase of Cuprate Superconductors

Charge Order and Peak-dip-hump Structure in Pseudogap Phase of Cuprate Superconductors
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铜酸盐超导体赝能隙相的电荷顺序和峰谷驼峰结构

DOI:
10.1007/s10948-016-3747-0
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发表时间:
2016-09
影响因子:
1.8
通讯作者:
Shiping Feng
Shiping Feng
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Huaisong Zhao;Deheng Gao;Shiping Feng

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在t-J模型的框架下,考虑赝隙效应,研究了正常状态下铜酸盐超导体电子能谱中峰-峰-峰结构的性质。结果表明,与电荷有序态类似,电子能谱中的峰-峰-峰结构也是由赝隙的动量依赖而产生的,因此,电荷有序态和峰-峰-峰结构的出现是有共同起源的。特别是,电子光谱中除了热点外,整个电子费米面都出现了显著的峰-峰-峰结构。
Within the framework of thet-Jmodel, the nature of the peak-dip-hump structure in the electron spectrum of cuprate superconductors in the normal-state is studied by taking into account the pseudogap effect. It is shown that in analogy to the charge-order state, the peak-dip-hump structure in the electron spectrum is also generated by the momentum dependence of the pseudogap, and therefore, there is a common origin for the emergence of the charge-order state and peak-dip-hump structure. In particular, the remarkable peak-dip-hump structure in the electron spectrum appears in the entire region of the electron Fermi surface except for the hot spots.
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