论文标题
Nodeless $ s $ - 波拉底地区的超导阶段，ba $ _2 $ cuo $ _3 $ type结构
Nodeless $s$-Wave Superconducting Phases in Cuprates with Ba$_2$CuO$_3$-Type Structure
论文作者
论文摘要
在这项工作中，研究了零温度相图的BA $ _2 $ CUO $ _3 $ -TYPE CUO链结构。投影对称组分析用于强耦合极限，并在弱耦合极限中采用了具有琼脂化分析的重新归一化组。我们发现，在这两个限制中，相图的大面积都充满了无节俭的$ S $ - 波超导阶段（$ d $ - 波组件），而不是纯$ d $ - 波相位，大多数是在铜层中发现的。这意味着无节奏$ S $波阶段是铜层中主要的超导阶段，ba $ _2 $ _2 $ cuo $ _3 $ type cuo cuo链结构在低温下。还发现了其他阶段，包括$（S+D）$ - 波超导相和Luttinger液相。
In this work zero-temperature phase diagrams of cuprates with Ba$_2$CuO$_3$-type CuO chain structure is investigated. The projective symmetry group analysis is employed in the strong coupling limit, and renormalization group with bosonization analysis is employed in the weak coupling limit. We find that in both of these two limits, large areas of the phase diagrams are filled with nodeless $s$-wave superconducting phases (with weak $d$-wave components), instead of pure $d$-wave phase mostly found in cuprates. This implies that nodeless $s$-wave phase is the dominant superconducting phase in cuprates with Ba$_2$CuO$_3$-type CuO chain structure in low temperature. Other phases are also found, including $(s+d)$-wave superconducting phases and Luttinger liquid phases.
