论文标题
由拓扑限制支配的丘比特的超导性
Superconductivity in cuprates governed by topological constraints
论文作者
论文摘要
Cuprate $ T_C $ DOME的显着普遍性表明一个非常基本的统一原则。此外，已知超导差距在所有库酸酯的伪随阶段持续到$ t_c $以上。因此，与BC相反，差距不能是过渡的顺序参数。 在这项工作中，我们证明了$ t_c $ -dome和pseudogap Line $ t^*（p）$均来自独特且可识别的原理：在反铁磁方形晶格上局部“ pairons”的相互作用。此类预制的成对的拓扑约束产生了$ T_C $ DOME和配对能量{\ it同时}。它还为相图的临界掺杂点提供了自然的解释。 该模型与$ t^*$和$ t_c $实验线完全匹配，只有一个可调节的参数。
The remarkable universality of the cuprate $T_c$ dome suggests a very fundamental unifying principle. Moreover, the superconducting gap is known to persist above $T_c$ in the pseudogap phase of all cuprates. So, contrary to BCS, the gap cannot be the order parameter of the transition. In this work, we show that both the $T_c$-dome and the pseudogap line $T^*(p)$ arise from a unique and identifiable principle: the interaction of localized `pairons' on an antiferromagnetic square lattice. The topological constraints on such preformed pairons give rise to both the $T_c$ dome and the pairing energy {\it simultaneously}. It also provides a natural explanation for the critical doping points of the phase diagram. The model matches perfectly both the $T^*$ and $T_c$ experimental lines, with only one adjustable parameter.
