论文标题
Anapole和单极超导体中的压电效应和二极管效应
Piezoelectric effect and diode effect in anapole and monopole superconductors
论文作者
论文摘要
缺乏反转对称性和时间反转对称性的超导体吸引了很多关注，作为外来超导阶段和异常现象的平台，包括超导二极管效应。最近的研究揭示了这种对称性的内在阶段，称为Anapole超导性和单极超导性，它们分别是$ PT $ -SMMETRIC的超导态，分别具有和不具有Cooper Pairs的总动量。为了探索这些状态中的特征现象，我们计算和预测超导压电效应和超导二极管效应。讨论了与有限的$ Q $配对，不对称的Bogoliubov光谱和量子几何形状的密切关系。这项研究揭示了压电和二极管效应，作为阐明外来超导阶段的潜在探针。
Superconductors lacking both inversion symmetry and time-reversal symmetry have been attracting much attention as a platform for exotic superconducting phases and anomalous phenomena, including the superconducting diode effect. Recent studies revealed intrinsic phases with this symmetry, named anapole superconductivity and monopole superconductivity, which are $PT$-symmetric superconducting states with and without Cooper pairs' total momentum, respectively. To explore characteristic phenomena in these states, we calculate and predict the superconducting piezoelectric effect and superconducting diode effect. A close relationship with the finite-$q$ pairing, asymmetric Bogoliubov spectrum, and quantum geometry is discussed. This study reveals the piezoelectric and diode effects as potential probes to elucidate exotic superconducting phases.
