Phases of the 2D Hubbard model at low doping

Abstract

We show that the planar spiral phase of the 2D Hubbard model at low doping, x, is unstable towards a noncoplanar spin configuration. The novel equilibrium state we found at low doping is incommensurate with the inverse pitch of the spiral varying as x^(1/2), but nevertheless has a dominant peak in the susceptibility at (π,π). Relevance to the NMR and neutron scattering experiments in La_2-xSr_xCuO_4 is disccussed.

12 pages, emtex v.3.0

References in corpus (3)

• Theory of Two-Dimensional Quantum Heisenberg Antiferromagnets with a Nearly Critical Ground State
• Quantum Phases of the Shraiman-Siggia Model
• Spiral Magnets as Gapless Mott Insulators

Cited by in corpus (2)

• Crossover and scaling in a nearly antiferromagnetic Fermi liquid in two dimensions
• Time reversal symmetry breaking in cuprates induced by the spiral spin order