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Interplay of CDW, SDW and superconductivity in high-T-c cuprates

机译：高T-c铜酸盐中CDW，SDW和超导的相互作用

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摘要

We present a model calculation of the interplay of the charge density wave (CDW), spin density wave (SDW) and superconductivity in high temperature superconductors. In low doping situation the long range anti ferromagnetic order is destroyed to give rise to SDW state accompanied by a CDW state in the system due to doping. For suitable doping the superconductivity appears in the system. The CDW state may describe the pseudogap, phenomenon which co-exists with the superconducting phase and extends to normal phase in high-T-c systems. These three competiting interactions co-exist together. These three gap parameters are calculated from the model Hamiltonian and solved self-consistently. By varying their coupling constants their interplay are investigated. Finally density of states is calculated for the conduction band which displays the experimental conductance data of Ekino et al. [T. Ekino, Y. Sezaki, H. Fujji, Phys. Rev. B 60 (1999) 6916].
机译：我们提出了高温超导体中电荷密度波（CDW），自旋密度波（SDW）和超导电性相互作用的模型计算。在低掺杂情况下，由于掺杂，远程反铁磁序被破坏，从而在系统中伴随CDW状态而引起SDW状态。为了进行适当的掺杂，系统中会出现超导性。 CDW状态可以描述伪间隙现象，该现象与超导相共存并在高T-c系统中扩展到正常相。这三个竞争相互作用共存。这三个间隙参数是从模型哈密顿量计算出来的，并且自洽地求解。通过改变它们的耦合常数，可以研究它们的相互作用。最终计算出导带的状态密度，该导带显示了Ekino等人的实验电导数据。 [T. Ekino，Y.Sezaki，H.Fujji，物理学Rev.B 60（1999）6916]。

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