Phonon Effects on Spin-Charge Separation in One Dimension

Details Phonon Effects on Spin-Charge Separation in One Dimension Phonon Effects on Spin-Charge Separation in One Dimension

2005-11-08

arxiv.org/abs/cond-mat/0511190v3

Phys. Rev. Lett. 96, 156402 (2006)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 5 figures, minor differences with the published version in Physical Review Letters

Scientific paper

10.1103/PhysRevLett.96.156402

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 ARPES data.

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