Electronic structure of stripes in two-dimensional Hubbard model

Masanori Ichioka, Kazushige Machida

    Research output: Contribution to journalArticlepeer-review

    85 Citations (Scopus)

    Abstract

    Focusing on La2-xSrxCuO4, we study the stripe structure by the self-consistent mean-field theory of the Hubbard model. By introducing the realistic Fermi surface topology, the SDW-gapped insulator is changed to metallic. The solitonic features of the stripe structure and the contribution of the mid-gap states are presented. We consider the band dispersion, the local density of states, the spectral weight, and the optical conductivity, associated with the solitonic structure. These results may provide important information for the experimental research of the stripe structure, such as the angle-resolved photoemission experiments. The "Fermi surface" shape is changed depending on the ratio of the incommensurability δ and the hole density nh. In real space, only the stripe region is metallic when δ/nh is large.

    Original languageEnglish
    Pages (from-to)4020-4031
    Number of pages12
    Journaljournal of the physical society of japan
    Volume68
    Issue number12
    DOIs
    Publication statusPublished - Dec 1999

    Keywords

    • High T cuprates
    • Hubbard model
    • Spectral weight
    • Stripe structure

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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