Topological versus conventional superconductivity in a Weyl semimetal:A microscopic approach  

作　　者：Enrique Muñoz Juan Esparza JoséBraun Rodrigo Soto-Garrido 

机构地区：[1]Facultad de Física,Pontificia Universidad Católica de Chile,Vicuña Mackenna 4860,Santiago,Chile [2]Center for Nanotechnology and Advanced Materials CIEN-UC,Avenida Vicuña Mackenna 4860,Santiago,Chile

出　　处：《Superconductivity》2024年第4期49-58,共10页超导(英文)

基　　金：financial support from ANID Fondecyt Grants No 1230440 and No 1241033.

摘　　要：Starting from a microscopic model for the particle-particle interactions in a Weyl semimetal,we analyzed the possibility for conventional as well as monopole Cooper pairing between quasiparticle excitations at the same(intra‐nodal)or opposite(inter‐nodal)Weyl nodes.We derived a coupled system of self‐consistent BCS‐like equations,where the angular dependence of the pairings is directly determined from the microscopic interac-tion symmetries.We studied the competition between conventional and monopole superconducting phases,thus obtaining explicitly the phase diagrams from the microscopic interaction model parameters.We deter-mined the critical temperatures for both phases,and the low temperature critical behavior,including the speci-fic heat,that we suggest as possible experimental probe for topological quantum criticality in Weyl semimetals.

关 键 词：CONVENTIONAL NODAL critical 

分 类 号：O57[理学—粒子物理与原子核物理]