Electron-phonon coupling and spin-charge separation in one-dimensional Mott insulators

H. Matsueda, T. Tohyama, S. Maekawa

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22 Citations (Scopus)


We examine the single-particle excitation spectrum in the one-dimensional Hubbard-Holstein model at half-filling by performing a dynamical density matrix renormalization group calculation. The spin-charge separation is robust against the electron-phonon (EP) coupling, although both spinon and holon branches are affected by phonons. We find that this robustness is in sharp contrast to a rather strong influence of the EP coupling on quasiparticle properties in two dimensions. We discuss the implication of the results of recent angle-resolved photoemission spectroscopy measurements on SrCu O2.

Original languageEnglish
Article number241103
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number24
Publication statusPublished - 2006

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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