TY - JOUR
T1 - Effect of electron-phonon coupling on spin-charge separation in one-dimensional strongly correlated electron systems
AU - Matsueda, Hiroaki
AU - Tohyama, Takami
AU - Maekawa, Sadamichi
N1 - Funding Information:
This work was supported by NAREGI Nanoscience project and Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology of Japan, and CREST.
PY - 2007/3
Y1 - 2007/3
N2 - 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.
AB - 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.
KW - Angle-resolved photoemission spectroscopy
KW - Dynamical density matrix renormalization group method
KW - Electron-phonon coupling
KW - Hubbard-Holstein model
KW - Spin-charge separation
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U2 - 10.1016/j.jmmm.2006.10.360
DO - 10.1016/j.jmmm.2006.10.360
M3 - Article
AN - SCOPUS:33847333416
SN - 0304-8853
VL - 310
SP - 975
EP - 977
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
IS - 2 SUPPL. PART 2
ER -