Optical conductivity of polaronic charge carriers

Abstract

The optical conductivity of charge carriers coupled to quantum phonons is studied in the framework of the one-dimensional spinless Holstein model. For one electron, variational diagonalisation yields exact results in the thermodynamic limit, whereas at finite carrier density analytical approximations based on previous work on single-particle spectral functions are obtained. Particular emphasis is put on deviations from weak-coupling, small-polaron or one-electron theories occurring at intermediate coupling and/or finite carrier density. The analytical results are in surprisingly good agreement with exact data, and exhibit the characteristic polaronic excitations observed in experiments on manganites.

arXiv comment23 pages, 11 figures

References in corpus (25)

• The Kernel Polynomial Method
• Anomalous Normal-State Properties of High-T${}_c$ Superconductors -- Intrinsic Properties of Strongly Correlated Electron Systems?
• The Holstein Polaron
• Cluster Perturbation Theory for Hubbard models
• Polaron Absorption in a Perovskite Manganite La0.7Ca0.3MnO3
• Ferromagnetism and electron-phonon coupling in the manganites
• Lattice polaron formation: Effects of non-screened electron-phonon interaction
• Polaronic excitations in CMR manganite films
• Optical conductivity of the Frohlich polaron
• Optical Absorption of an Interacting Many-Polaron Gas
• Quantum lattice dynamical effects on the single-particle excitations in 1D Mott and Peierls insulators
• Photoemission spectra of many-polaron systems
• Single-particle excitations and phonon softening in the one-dimensional spinless Holstein model
• The Essential Interactions in Oxides and Spectral Weight Transfer in Doped Manganites
• Spectral signatures of the Luttinger liquid to charge-density-wave transition
• Phonon softening and dispersion in the 1D Holstein model of spinless fermions
• Optical absorption and activated transport in polaronic systems
• Many-body CPA for the Holstein-DE model
• Spectral properties and infrared absorption in manganites
• Small polaron formation in many-particle states of the Hubbard-Holstein model: The one-dimensional case
• Phonon spectral function of the Holstein polaron
• Spectral functions of the spinless Holstein model
• Analytical approach to the quantum-phase transition in the one-dimensional spinless Holstein model
• Small and large polarons in nickelates, manganites, and cuprates
• Optical response of many-polaron systems

Cited by in corpus (10)

• Mobility of Holstein polaron: an unbiased approach
• Optical conductivity of the Holstein polaron
• Non-equilibrium transport through molecular junctions in the quantum regime
• On the nature of the optical conductivity of polaron
• Dynamic charge correlations near the Peierls transition
• Phase diagram of the Holstein polaron in one dimension
• Interplay of charge, spin and lattice degrees of freedom on the spectral properties of the one-dimensional Hubbard-Holstein model
• Phonon affected transport through molecular quantum dots
• Lattice exciton-polaron problem by quantum Monte Carlo simulations
• Thermal and optical conductivity in the Holstein model at half filling and at finite temperature in the Luttinger-liquid and charge-density-wave regime