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)

Abstract

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
Volume70
Issue number3
DOIs
Publication statusPublished - Mar 1 2001

Keywords

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

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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