Metal-Insulator Transition in the Hubbard Model: Correlations and Spiral Magnetic Structures

Abstract

The metal--insulator transition (MIT) for the square, simple cubic, and body-centered cubic lattices is investigated within the $t-t^{\prime }$ Hubbard model at half-filling by using both the Hartree-Fock approximation (HFA) generalized for the case of spiral order and Kotliar-Ruckenstein slave-boson approach. It turns out that magnetic scenario of MIT becomes superior over non-magnetic one. The electron correlations lead to some suppression of the spiral phases in comparison with HFA. We found the presence of metallic antiferromagnetic (spiral) phase in the case of three-dimensional lattices.

Proc. XXXVII Meeting on Low Temperature Physics, June-July 2015, Kazan, 7 pages

References in corpus (4)

• Gapless quantum spin liquid, stripe and antiferromagnetic phases in frustrated Hubbard models in two dimensions
• Collinear antiferromagnetic state in a two-dimensional Hubbard model at half filling
• Magnetic properties and Mott transition in the square-lattice Hubbard model with frustration
• Correlation Effects and Non-Collinear Magnetism in the Doped Hubbard Model

Cited by in corpus (7)

• Spin and charge modulations of a half-filled extended Hubbard model
• Giant van Hove Density of States Singularities and Anomalies of Electron and Magnetic Properties in Cubic Lattices
• Unified intermediate coupling description of the pseudogap and the strange metal phases of cuprates
• Metal-insulator transition and antiferromagnetism in the generalized Hubbard model: Treatment of correlation effects
• Quantum topological transitions and spinons in metallic ferro- and antiferromagnets
• Electron states and magnetic phase diagrams of strongly correlated systems
• Anisotropy crossover in the frustrated Hubbard model on four-chain cylinders