Electron-phonon coupling and spin-charge separation in one-dimensional Mott insulators

Abstract

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 (DDMRG) calculation. The DDMRG results are interpreted as superposition of spectra for a spinless carrier dressed with phonons. The superposition is a consequence of robustness of the spin-charge separation against electron-phonon coupling. The separation is in contrast to the coupling between phonon and spin degrees of freedom in two-dimensional systems. We discuss implication of the results of the recent angle-resolved photoemission spectroscopy measurements on SrCuO${}_2$.

5 pages, 4 figures. submitted to the Physical Review Letters

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• Temperature dependence of spinon and holon excitations in one-dimensional Mott insulators
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Cited by in corpus (15)

• Anomalously Strong Near-Neighbor Attraction in Doped 1D Cuprate Chains
• Metallicity in the half-filled Holstein-Hubbard model
• Phase diagram of the one dimensional Hubbard-Holstein Model at 1/2 and 1/4 filling
• Excitation spectra and spin gap of the half-filled Holstein-Hubbard model
• Relaxation Dynamics of Photocarriers in One-Dimensional Mott Insulators Coupled to Phonons
• Phonon spectral function of the one-dimensional Holstein-Hubbard model
• Interplay of charge, spin and lattice degrees of freedom on the spectral properties of the one-dimensional Hubbard-Holstein model
• Ground state and spectral properties of the doped one-dimensional optical Hubbard-Su-Schrieffer-Heeger model
• Enhancement of phonon effects in photoexcited states of one-dimensional Mott insulators
• Chebyshev pseudosite matrix product state approach for the spectral functions of electron-phonon coupling systems
• Steady-state Peierls transition in nanotube quantum simulator
• Peierls to superfluid crossover in the one-dimensional, quarter-filled Holstein model
• Observation of spin-charge separation and boundary bound states via the local density of states
• Electron addition spectral functions of low-density polaron liquids
• Phase diagram of the two-dimensional Hubbard-Holstein model: enhancement of $s$-wave pairing between charge and magnetic orders