Quantum Monte Carlo study of artificial triangular graphene quantum dotsE. Bulut Kul, G\"okhan \"Oztarhan, M. N. \c{C}{\i}nar, A. D. G\"u\c{c}l\"uhttps://arxiv.org/abs/2506.08621
Quantum Monte Carlo study of artificial triangular graphene quantum dotsWe investigate the magnetic phases of triangular graphene quantum dots (TGQDs) with zigzag edges using variational and quantum Monte Carlo methods. These systems serve as quantum simulators for bipartite lattices with broken sublattice symmetry, providing a platform to study the extended Hubbard model's emergent magnetic phenomena, including Lieb's magnetism at half-filling, edge depolarization upon single-electron addition, and Nagaoka ferromagnetism. Our non-perturbative quantum…