Magnetic phase diagram of the three-dimensional doped Hubbard model
Abstract
We establish the phase diagram of the Hubbard model on a cubic lattice for a wide range of temperatures, dopings and interaction strengths, considering both commensurate and incommensurate magnetic orders. We use the dynamical mean-field theory together with an efficient method to compute the free energy which enable the determination of the correct ordering vectors. Besides an antiferromagnetic state close to half-filling, we identify a number of different magnetic spiral phases with ordering vectors , and as well as a region with close competition between them, hinting at spatial phase separation or at the onset of a stripe phase. Additionally, we extensively study several thermodynamic properties with direct relevance to cold-atom experiments: the entropy, energy and double-occupancy.
Keywords
Cite
@article{arxiv.2409.08848,
title = {Magnetic phase diagram of the three-dimensional doped Hubbard model},
author = {Liam Rampon and Fedor Šimkovic and Michel Ferrero},
journal= {arXiv preprint arXiv:2409.08848},
year = {2025}
}