5 papers
Charge-4e/6e superconductivity and chiral metal from 3D chiral superconductor
Chu-Tian Gao, Chen Lu, Yu-Bo Liu +2
Unconventional superconductivity (SC) characterized by multi-fermion orderings has attracted substantial attention. However, previous studies have largely focused on 2D systems or…
Van Hove singularity-induced multiple magnetic transitions in multi-orbital systems
Chen Lu, Lun-Hui Hu
Van Hove singularities (VHSs) amplify electronic correlations, providing a crucial platform for discovering novel quantum phase transitions. Here, we show that VHSs in multi-orbita…
Inter-orbital spin-triplet superconductivity from altermagnetic fluctuations
Chen Lu, Chuang Li, Chao Cao +3
Altermagnetic (AM) fluctuations are a new class of collinear spin fluctuations whose role in mediating superconductivity faces a fundamental tension: their -point peak favors in…
Breakdown of Stoner Ferromagnetism by Intrinsic Altermagnetism
Chen Lu, Chao Cao, Huiqiu Yuan +2
The Stoner criterion for ferromagnetism arises from interaction-driven asymmetric filling of spin bands, requiring that the spin susceptibility: (i) peaks dominantly at $\mathbf{Q}…
Theory of Second-Order Topological Superconductors
Zi-Ming Wang, Meng Zeng, Chen Lu +4
Topological superconductors are a class of unconventional superconducting materials featuring sub-gap zero-energy Majorana bound modes that hold promise as a building block for top…