Spectral function of the spiral spin state in the trestle and ladder Hubbard model

Details Spectral function of the spiral spin state in the trestle and ladder Hubbard model Spectral function of the spiral spin state in the trestle and ladder Hubbard model

1998-09-04

arxiv.org/abs/cond-mat/9809084v1

Physics

Condensed Matter

3 pages, RevTex, 8 figures in Postscript, to be published in Phys. Rev. B (rapid communication)

Scientific paper

10.1103/PhysRevB.58.R11833

Eder and Ohta have found a violation of the Luttinger rule in the spectral function for the t-t'-J model, which was interpreted as a possible breakdown of the Tomonaga-Luttinger(TL) description in models where electrons can pass each other. Here we have computed the spin correlation along with the spectral function for the one-dimensional t-t' Hubbard model and two-leg Hubbard ladder. By varying the Hubbard U we have identified that such a phenomenon is in fact a spinless-fermion-like behavior of holes moving in a spiral spin configuration that has a spin correlation length of the system size.

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