Phonon Effects on Spin-Charge Separation in One Dimension

Wen-Qiang Ning, Hui Zhao, Chang-Qin Wu, Hai-Qing Lin
2006 Physical Review Letters  
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
more » ... t the electron-phonon interaction must be taken into account when interpreting the ARPES data.
doi:10.1103/physrevlett.96.156402 pmid:16712177 fatcat:snyo6z5bvjf2ddht77shhbtqgu