Phonon Effects on Spin-Charge Separation in One Dimension

2005/11/30 by Wen-Qiang Ning, W. Q. Ning, Hui Zhao +4 · 1 citation
Materials Science · Physics and Astronomy · #Electronic and Structural Properties of Oxides #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.96.156402

published as Phys. Rev. Lett. 96, 156402 (2006) · 5 pages, 5 figures, minor differences with the published version in Physical Review Letters

openalex publication_date 2006/04/20 · arxiv created 2006/04/24 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Phonon effects on spin-charge separation in one dimension are investigated through the calculation of one-electron spectral functions in terms of the recently developed cluster perturbation theory together with an optimized phonon approach. It is found that the retardation effect due to the finiteness of phonon frequency suppresses the spin-charge separation and eventually makes it invisible in the spectral function. By comparing our results with experimental data of TTF-TCNQ, it is observed that the electron-phonon interaction must be taken into account when interpreting the angle-resolved photoemission spectroscopy data.

Citations

• Optimized phonon approach for the diagonalization of electron-phonon problems
• Remarks on Bloch's Method of Sound Waves applied to Many-Fermion Problems
• An Exactly Soluble Model of a Many-Fermion System
• Spectral function of a Luttinger liquid coupled to phonons and angle-resolved photoemission measurements in the cuprate superconductors

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• Enhancement of phonon effects in photoexcited states of one-dimensional Mott insulators