标题： Kagome晶格哈伯德模型与最近邻相互作用的配对相关性 显示英文标题

标题： Pairing correlation of the Kagome-lattice Hubbard model with the nearest-neighbor interaction

摘要： 一种最近发现的Kagome晶格材料家族，$\emph{A}\mathrm{V}_{3}\mathrm{Sb}_{5}$（$\emph{A}$=$\mathrm{K,Rb,Cs}$），引起了广泛关注，尤其是在其主导的超导配对对称性方面的争论。为了探讨这一问题，我们通过约束路径蒙特卡洛方法研究了Kagome-哈伯德模型中的超导配对行为。结果发现，在狄拉克点附近的掺杂会产生由局域库仑相互作用$U$驱动的主导的次近邻-$d$配对对称性。然而，当考虑近邻相互作用$V$时，可能会导致近邻-$p$配对成为首选的配对对称性。 我们的结果提供了有用的信息来确定$\emph{A}\mathrm{V}_{3}\mathrm{Sb}_{5}$家族中的主要超导配对对称性。 显示英文摘要

摘要： A recently discovered family of Kagome lattice materials, $\emph{A}\mathrm{V}_{3}\mathrm{Sb}_{5}$($\emph{A}$= $\mathrm{K,Rb,Cs}$), has attracted great interest, especially in the debate over its dominant superconducting pairing symmetry. To explore this issue, we study the superconducting pairing behavior within the Kagome-Hubbard model through the constrained path Monte Carlo method. It is found that doping around the Dirac point generates a dominant next-nearest-neighbour-$d$ pairing symmetry driven by on-site Coulomb interaction $U$. However, when considering the nearest-neighbor interaction $V$, it may induce nearest-neighbor-$p$ pairing to become the preferred pairing symmetry. Our results provide useful information to identify the dominant superconducting pairing symmetry in $\emph{A}\mathrm{V}_{3}\mathrm{Sb}_{5}$ family.