Unconventional ferromagnetism and spin-triplet superconductivity in the imbalanced kagome-lattice Hubbard model
Chenyue Wen, Xingchuan Zhu, Ning Hao, Huaiming Guo, Shiping Feng
DOI 10.1103/PhysRevB.105.245131 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
Unconventional ferromagnetism and superconductivity in the imbalanced kagome-lattice Hubbard model are investigated by the mean-field theory and determinant quantum Monte Carlo method. Due to the asymmetric band structure of kagome lattice, the spin-z ferromagnetic order intrinsically exists in the system, which is first enhanced by the interaction, and then continuously destructed after reaching a maximum at a moderate interaction strength. In contrast, the xy-plane ferromagnetism develops only above a critical interaction, which is estimated to be Uc/t=3.65±0.05 by finite-size scaling. We further verify the nature of the above transverse magnetic transition, and demonstrate it belongs to the three-dimensional XY universality class. Finally, we study the superconducting property, and reveal the possible superconducting state has a triplet f-wave pairing symmetry. Our results uncover the exotic quantum states induced by the interactions on kagome lattice, and provide important insights regarding the interplay between electronic correlations and geometry frustrations.
Similar papers
Universal approach to p-wave triplet superconductivity in the Hubbard models
similarity 0.93Wanpeng Han et al. · 2023 · arXiv:2303.04004
Source status unknown — claims are unverified
Sublattice modulated superconductivity in the kagome Hubbard model
similarity 0.91Tilman Schwemmer et al.
Source status unknown — claims are unverified
Charge bond order and s-wave superconductivity in the kagome lattice with electron-phonon coupling and electron-electron interaction
similarity 0.89Qing-Geng Yang et al.
Source status unknown — claims are unverified
Superconductivity on a quasiperiodic lattice: Extended-to-localized crossover of Cooper pairs
similarity 0.88Shiro Sakai et al.
Source status unknown — claims are unverified
Spontaneously orbital-selective superconductivity in a three-orbital Hubbard model
similarity 0.88Kosuke Ishigaki et al.
Source status unknown — claims are unverified
Superconductivity and Electron Correlations in Kagome Metal LuOs3B2
similarity 0.88Yusen Xiao et al. · 2026 · arXiv:2504.16412
Source status unknown — claims are unverified