Nature of charge order in cuprate superconductors

Nature of charge order in cuprate superconductors
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铜酸盐超导体中电荷顺序的性质

DOI:
10.1142/s0217979216420054
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发表时间:
2016-05
影响因子:
1.7
通讯作者:
Zhao Huaisong
Zhao Huaisong
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Feng Shiping;Gao Deheng;Zhao Huaisong

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最近发现的电荷有序是铜氧化物超导体的一个内在的和普遍的性质,然而,其微观起源仍然存在争议。本文简要地回顾了铜氧化物超导体中电荷序性质的理论工作。特别是,我们表明,电子自能湮没电子费米面周围的波腹区域,留下断开费米弧位于周围的节点区域。另一方面,电荷有序态是由费米弧不稳定性驱动的,其特征波矢量对应于费米弧的热点,而不是波腹嵌套矢量。由于赝能隙来源于电子的自能,因此铜氧化物超导体中的费米弧、电荷序和赝能隙是密切相关的。
The recently discovered charge order is an intrinsic and universal property of cuprate superconductors, however, its microscopic origin remains debated. Here we review briefly the theoretical work about the nature of charge order in cuprate superconductors. In particular, we show that the electron self-energy obliterates the electron Fermi surface around the antinodal region, leaving behind disconnected Fermi arcs located around the nodal region. The charge-order state on the other hand is driven by the Fermi arc instability, with a characteristic wavevector corresponding to the hot spots of the Fermi arcs rather than the antinodal nesting vector. Since the pseudogap emanates from the electron self-energy, the Fermi arc, charge order, and pseudogap in cuprate superconductors are intimately related each other.
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影响因子: --
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