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

1998; American Physical Society; Volume: 58; Issue: 18 Linguagem: Inglês

10.1103/physrevb.58.r11833

1095-3795

Ryotaro Arita, Koichi Kusakabe, Kazuhiko Kuroki, Hideo Aoki,

Advanced Condensed Matter Physics

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.