Ferromagnetic spin correlations in the two-dimensional Hubbard model

Abstract

We analyze the dynamical nearest-neighbor and next-nearest-neighbor spin correlations in the 4-site and 8-site dynamical cluster approximation to the two-dimensional Hubbard model. Focusing on the robustness of these correlations at long imaginary times, we reveal enhanced ferromagnetic correlations on the lattice diagonal, consistent with the emergence of composite spin-1 moments at a temperature scale that essentially coincides with the pseudo-gap temperature $T^{\ast }$. We discuss these results in the context of the spin-freezing theory of unconventional superconductivity.

References in corpus (25)

• Correlated Electrons in High Temperature Superconductors
• A Common Thread: the pairing interaction for the unconventional superconductors
• Quantum Cluster Theories
• Strong electronic correlations from Hund's coupling
• Cellular Dynamical Mean Field Approach to Strongly Correlated Systems
• Stripe order in the underdoped region of the two-dimensional Hubbard model
• Nonlocal Dynamical Correlations of Strongly Interacting Electron Systems
• Antiferromagnetism and d-wave superconductivity in cuprates: a uster DMFT study
• Superconductivity and the Pseudogap in the two-dimensional Hubbard model
• Spin freezing transition and non-Fermi-liquid self-energy in a 3-orbital model
• Pseudogap induced by short-range spin correlations in a doped Mott insulator
• Dynamical Breakup of the Fermi Surface in a doped Mott Insulator
• Anomalous superconductivity and its competition with antiferromagnetism in doped Mott insulators
• Momentum-sector-selective metal-insulator transition in the eight-site dynamical mean-field approximation to the Hubbard model in two dimensions
• Superconductivity from emerging magnetic moments
• Local Order and the gapped phase of the Hubbard model: a plaquette dynamical mean field investigation
• Implementation of the Maximum Entropy Method for Analytic Continuation
• Phase Diagram of the Hubbard Model: Beyond the Dynamical Mean Field
• Electronic orders in multi-orbital Hubbard models with lifted orbital degeneracy
• Continuous-time Quantum Monte Carlo using Worm Sampling
• Superconducting Fluctuations in the Normal State of the Two-Dimensional Hubbard Model
• Direct Search for a Ferromagnetic Phase in a Heavily Overdoped Nonsuperconducting Copper Oxide
• A spin-freezing perspective on cuprates
• Development of Ferromagnetic Fluctuations in Heavily Overdoped (Bi,Pb)_2_Sr_2_CuO_6+delta_ Copper Oxides
• Dynamical Charge Susceptibility in the Hubbard Model

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