Phases of the 2D Hubbard model at low doping

Details Phases of the 2D Hubbard model at low doping Phases of the 2D Hubbard model at low doping

1994-03-07

arxiv.org/abs/cond-mat/9403026v1

Physics

Condensed Matter

12 pages, emtex v.3.0

Scientific paper

10.1088/0953-8984/7/11/001

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 (\pi,\pi). Relevance to the NMR and neutron scattering experiments in La_2-xSr_xCuO_4 is disccussed.

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