Electronic structure of stripes in two-dimensional Hubbard model

Masanori Ichioka, Kazushige Machida

Research output: Contribution to journalArticle

84 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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