Abstract
A recently discovered family of kagome lattice materials,AV3Sb5(A=K,Rb,Cs),has attracted great interest,espe-cially in the debate over their dominant superconducting pairing symmetry.To explore this issue,we study the supercon-ducting pairing behavior within the kagome-lattice Hubbard model through the constrained path Monte Carlo method.It is found that doping around the Dirac point generates a dominant next-nearest-neighbor-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 super-conducting pairing symmetry in the AV3Sb5 family.
基金项目
Beijing Natural Science Foundation(1242022)
维普
万方数据