Density matrix renormalization group study of optical conductivity in the one-dimensional Mott insulator Sr_2CuO_3

Abstract

Applying newly developed dynamical density matrix renormalization group techniques at zero and finite temperatures to a Hubbard-Holstein model at half-filling, we examine the optical conductivity of a typical one-dimensional Mott insulator Sr_2CuO_3. We find a set of parameters in the Hubbard-Holstein model, which can describe optical conductivity for both Mott-gap excitation in the high-energy region and phonon-assisted spin excitation in the low-energy region. We also find that electron-phonon interaction gives additional broadening in the temperature dependence of the Mott-gap excitation.

5 pages, 3figures

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Cited by in corpus (15)

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• Observation of a dispersive charge mode in hole-doped cuprates using resonant inelastic x-ray scattering at the oxygen K edge
• Static and Dynamic Magnetic Properties of Spin-1/2 Inequilateral Diamond-Chain Compounds $A_3$Cu${}_3$AlO${}_2$(SO${}_4$)${}_4$ ($A$=K, Rb, and Cs)
• Enhanced charge excitations in electron-doped cuprates by resonant inelastic x-ray scattering
• Correlated singlet phase in the one-dimensional Hubbard-Holstein model
• Dynamical DMRG study of spin and charge excitations in the four-leg t-t'-J ladder
• Resonating dimer-monomer liquid state in a magnetization plateau of a spin-$\frac{1}{2}$ kagome-strip Heisenberg chain
• Magnetic excitations in magnetization plateaux of a frustrated spin ladder
• Study of supersolidity in the two-dimensional Hubbard-Holstein model
• Spin Dynamics in the t-t'-J Model: Dynamical Density-Matrix Renormalization Group Study
• Density-matrix renormalization group study of third harmonic generation in one-dimensional Mott insulator coupled with phonon
• Phase diagram of Hubbard-Holstein model on 4-leg tube system at quarter-filling
• Spin and charge dynamics of doped one-dimensional Mott insulators
• Unconventional correlated metallic behavior due to interorbital Coulomb interaction
• Charge creation via quantum tunneling in one-dimensional Mott insulators: A numerical study of the extended Hubbard model