论文标题
通过涡旋和边缘光谱诊断Kagome超导体中的配对对称性
Diagnosis of pairing symmetry by vortex and edge spectra in kagome superconductors
论文作者
论文摘要
分层的Kagome金属AV3SB5（A = K，RB，CS）表现出不同的相关电子现象。它包括电荷密度波的形成和超导性，由于矛盾的实验证据，其配对对称性是有争议的。通过基于平均场水平的真实空间晶格模型的计算，我们研究了通过非常规超导性的弱耦合分析，建议AV3SB5的所有竞争配对倾向的涡流和表面光谱。手性p波配对是唯一在涡流中托管Majorana绑定状态的唯一选择。我们找到了P-波和D波配对的手性边缘状态，以及平面Andreev表面结合状态，用于F波配对。我们的结果扩大了超导配对的指纹，因此将有助于解决AV3SB5中超导性的性质。
Layered kagome metals AV3Sb5 (A=K, Rb, Cs) exhibit diverse correlated electron phenomena. It includes charge density wave formation and superconductivity the pairing symmetry of which, however, is controversial due to contradictory experimental evidence. Through calculations based on real-space lattice models at the mean-field level, we investigate the vortex and surface spectra of all competitive pairing propensities suggested for AV3Sb5 from a weak coupling analysis of unconventional superconductivity. Chiral p-wave pairing emerges as the only option to host Majorana bound states in the vortex core. We find chiral edge states for both p-wave and d-wave pairing, along with flat Andreev surface bound states for f -wave pairing. Our results expand the fingerprint of superconducting pairing, and thus will contribute to resolving the nature of superconductivity in AV3Sb5.
