Effect of electron-phonon coupling on spin-charge separation in one-dimensional strongly correlated electron systems

Hiroaki Matsueda, Takami Tohyama, Sadamichi Maekawa

Research output: Contribution to journalArticlepeer-review

Abstract

We examine the single-particle excitation spectrum in the one-dimensional Hubbard-Holstein model at half-filling by performing the dynamical density matrix renormalization group calculation. We find that the spin-charge separation is robust against the electron-phonon coupling, although both of the spinon and holon branches are affected by phonons. We propose an effective model for the spectrum that is defined by a superposition of spectra for the Holstein model.

Original languageEnglish
Pages (from-to)975-977
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume310
Issue number2 SUPPL. PART 2
DOIs
Publication statusPublished - 2007 Mar

Keywords

  • Angle-resolved photoemission spectroscopy
  • Dynamical density matrix renormalization group method
  • Electron-phonon coupling
  • Hubbard-Holstein model
  • Spin-charge separation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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