Tuning Kinetic Magnetism of Strongly Correlated Electrons via Staggered Flux

Abstract

We explore the kinetic magnetism of the infinite-$U$ repulsive Hubbard models at low hole densities on various lattices with nearest-neighbor hopping integrals modulated by a staggered magnetic flux $\pm \varphi$. Tuning $\varphi$ from 0 to $\pi$ makes the ground state (GS) change from a Nagaoka-type ferromagnetic state to a Haerter-Shastry-type antiferromagnetic state at a critical ${\varphi }_c$, with both states being of kinetic origin. Intra-plaquette spin correlation, as well as the GS energy, signals such a quantum criticality. This tunable kinetic magnetism is generic, and appears in chains, ladders and two-dimensional lattices with squares or triangles as elementary constituents.

arXiv comment4 pages, 5 figures, 1 table

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Cited by in corpus (6)

• Classical Antiferromagnetism in Kinetically Frustrated Electronic Models
• Evolution of Nagaoka phase with kinetic energy frustrating hoppings
• Kinetic magnetism in the crossover between the square and triangular lattice Fermi-Hubbard models
• Kinetic Magnetism at the Interface Between Mott and Band Insulators
• Topological frustration and structural balance in strongly correlated itinerant electron systems: an extension of Nagaoka's theorem
• Optimal array geometries for kinetic magnetism and Nagaoka polarons