Strongly Interacting Two-Dimensional Dirac Fermions
Abstract
We show how strongly interacting two-dimensional Dirac fermions can be realized with ultracold atoms in a two-dimensional optical square lattice with an experimentally realistic, inherent gauge field, which breaks time-reversal and inversion symmetries. We find remarkable phenomena in a temperature range around a tenth of the Fermi-temperature, accessible with present experimental techniques: at zero chemical potential, besides a conventional s-wave superconducting phase, unconventional superconductivity with non-local bond pairing arises. In a temperature versus doping phase diagram, the unconventional superconducting phase exhibits a dome structure, reminiscent of the phase diagram for high-temperature superconductors and heavy fermions.
Cite
@article{arxiv.0905.1281,
title = {Strongly Interacting Two-Dimensional Dirac Fermions},
author = {Lih-King Lim and Achilleas Lazarides and Andreas Hemmerich and C. Morais Smith},
journal= {arXiv preprint arXiv:0905.1281},
year = {2015}
}
Comments
4 pages, 3 figures