Collective Modes of Incommensurate Spin Density Wave in One-Dimensional Hubbard Model

Masanori Ichioka, Eiji Kaneshita, Kazushige Machida

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)


    Dynamical spin and charge susceptibility and collective modes are studied in the framework of the random phase approximation. They are calculated from the wave function of the selfconsistently obtained ground state, including all possible higher harmonics components of the ordering vector Q. We investigate a spin wave excitation in the spin transverse mode, and phason excitation related to the domain-wall motion in the spin longitudinal and charge modes. We consider the dispersion curve of the collective mode, and discuss the dependence on the on-site U interaction and the period of the incommensurate structure.

    Original languageEnglish
    Pages (from-to)818-828
    Number of pages11
    Journaljournal of the physical society of japan
    Issue number3
    Publication statusPublished - Mar 1 2001


    • Collective modes
    • Dynamical susceptibility
    • Hubbard model
    • Incommensurate spin density wave

    ASJC Scopus subject areas

    • Physics and Astronomy(all)


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