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Effect of electron-phonon interaction on optical response in one-dimensional cuprates |
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| Authors: | Hiroaki Matsueda Akihiro Ando Sadamichi Maekawa |
| Institution: | a Sendai National College of Technology, Ayashi-chuo 4-16-1, Aoba-ku, Sendai 989-3128, Japan b Institute for Materials Research, Tohoku University, Sendai 980-8578, Japan c Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan d CREST, Japan Science and Technology Agency (JST), Kawaguchi 332-0012, Japan |
| Abstract: | We examine the single-particle excitation and linear optical absorption spectra in the one-dimensional (1D) extended Hubbard-Holstein model. We perform dynamical density matrix renormalization group calculations with use of pseudo-site representation of phonons. We focus on the interplay among phonons and elementary excitations in 1D Mott insulators. The excitations in the Mott insulators are easily modified by the phonons. We discuss implications of the present results in light of spectroscopic measurements in 1D cuprates. |
| Keywords: | 71 10 Fd 71 35 &minus y 72 80 Sk 78 30 Am |
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