Stripe Structure, Spectral Feature and Soliton Gap in High Tc Cuprates

Kazushige Machida, Masanori Ichioka

    Research output: Contribution to journalArticlepeer-review

    50 Citations (Scopus)

    Abstract

    We show that lightly doped La2-xTSrxCuO4 can be described in terms of a stripe magnetic structure or soliton picture. The internal relationship between the recent neutron observation of the diagonal (x=0.05) to vertical (x ≥ 0.06) stripe transition, which was predicted, and the concomitant metal-insulator transition, is clarified by soliton physics. The phase diagram with the unidentified transition lines between the antiferromagnetic and stripe phases, the doping dependence of the modulation period, and the origin of the mid-infrared optical absorption are investigated and compared with other single-layer systems, La2-xSrxNiO4 and (La, Nd)2-xSrxCuO4. A novel type of quasi-particles and holes is fully responsible for metallic conduction and ultimately superconductivity.

    Original languageEnglish
    Pages (from-to)2168-2171
    Number of pages4
    Journaljournal of the physical society of japan
    Volume68
    Issue number7
    DOIs
    Publication statusPublished - Jul 1999

    Keywords

    • High T cupratesHubbard model
    • Soliton gap
    • Stripe structure

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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