Abstract: Kinetic frustration is opening a new paradigm in cold atomic systems and two-dimensional moiré materials, since it induces nontrivial magnetic and spin-charge correlations at temperature scales of the order of the tunneling force, giving rise to so-called kinetic magnetism [1,2,3]. This phenomenon appears in the strongly interacting regime of doped Fermi-Hubbard Hamiltonians in non-bipartite lattices, such as the two-dimensional triangular lattice. In this talk I will discuss how kinetic magnetism and magnetic polarons emerge in these systems [4] and how recent experiments with cold atoms using quantum gas microscopes have been able to observe them experimentally [5,6].

References:
[1]I. Morera, A. Bohrdt, W. W. Ho, E. Demler. arXiv:2106.09600. To be published in Phys. Rev. Res.

[2] Ivan Morera, Annabelle Bohrdt, Wen Wei Ho, Eugene Demler. Physical Review Research 5 (2), L022048.

[3] Livio Ciorciaro, T Smoleński, Ivan Morera, Natasha Kiper, Sarah Hiestand, Martin Kroner, Yang Zhang, Kenji Watanabe, Takashi Taniguchi, Eugene Demler, A İmamoğlu. Nature 623 (7987), 509-513.

[4] Ivan Morera, Eugene Demler. arXiv:2402.14074

[5] Martin Lebrat, Muqing Xu, Lev Haldar Kendrick, Anant Kale, Youqi Gang, Pranav Seetharaman, Ivan Morera, Ehsan Khatami, Eugene Demler, Markus Greiner. arXiv:2308.12269. To be published in Nature.

[6] Max L Prichard, Benjamin M Spar, Ivan Morera, Eugene Demler, Zoe Z Yan, Waseem S Bakr. arXiv:2308.12951. To be published in Nature.