Polaronic features in the optical properties of the Holstein-t-J model

Abstract

We derive the exact solution for the optical conductivity $\sigma (\omega )$ of one hole in the Holstein-t-J model in the framework of dynamical mean-field theory (DMFT). We investigate the magnetic and phonon features associated with polaron formation as a function of the exchange coupling $J$, of the electron-phonon interaction $\lambda$ and of the temperature. Our solution directly relates the features of the optical conductivity to the excitations in the single-particle spectral function, revealing two distinct mechanisms of closing and filling of the optical pseudogap that take place upon varying the microscopic parameters. We show that the optical absorption at the polaron crossover is characterized by a coexistence of a magnon peak at low frequency and a broad polaronic band at higher frequency. An analytical expression for $\sigma (\omega )$ valid in the polaronic regime is presented.

arXiv commentimproved version, as submitted to Phys. Rev. B

References in corpus (28)

• Correlated Electrons in High Temperature Superconductors
• Missing Quasiparticles and the Chemical Potential Puzzle in the Doping Evolution of the Cuprate Superconductors
• Polaron in t-J model
• Dynamical mean-field theory of the small polaron
• Polaronic behavior of undoped high-Tc cuprates
• Electron-phonon interaction in the t-J model
• Evolution of a polaron band through the phase diagram of Nd[2-x]Ce[x]CuO[4-y]
• Optical absorption and single-particle excitations in the 2D Holstein t-J model
• Infrared signatures of charge stripes in La(2-x)Sr(x)CuO(4)
• Optical Absorption of an Interacting Many-Polaron Gas
• Holes in the t-J_z model: a thorough study
• Electron-phonon interaction and antiferromagnetic correlations
• Optical conductivity of the infinite-dimensional Hubbard model
• Optical Conductivity of the t-J model within Cluster Dynamical Mean Field Theory
• Optical properties of small polarons from dynamical mean-field theory
• Charge Dynamics in the Planar t-J Model
• Dispersion of incoherent spectral features in systems with strong electron-phonon coupling
• Numerical study of the isotope effect in underdoped high-temperature superconductors: Calculation of the angle-resolved photoemission spectra
• Polarization catastrophe in the polaronic Wigner crystal
• Self-localization of composite spin-lattice polarons
• Magnetic and lattice polaron in Holstein-t-J model
• Hole motion in the Ising antiferromagnet: an application of the recursion method
• Electron-phonon coupling in the self-consistent Born approximation of the t-J model
• Spectral properties and isotope effect in strongly interacting systems: Mott-Hubbard insulator and polaronic semiconductor
• Charge dynamics and optical conductivity of the t-J model
• Resistivity and optical conductivity of cuprates within the t-J model
• Spectral properties of the t-J model in the presence of hole-phonon interaction
• Is the Quantum Melting of a Polaron Wigner Crystal an Insulator-to-Superconductor transition ?

Cited by in corpus (16)

• Electrodynamics of Correlated Electron Materials
• Interplay between electron-phonon and Coulomb interactions in cuprates
• Charge dynamics of doped holes in high Tc cuprates - A clue from optical conductivity
• Quantum Dynamics of the Hubbard-Holstein Model in Equilibrium and Non-Equilibrium: Application to Pump-Probe Phenomena
• Signature of antiferromagnetic long-range order in the optical spectrum of strongly correlated electron systems
• Temperature dependence of the angle resolved photoemission spectra in the undoped cuprates: self-consistent approach to the t-J-Holstein model
• Bipolaron in the t-J model coupled to longitudinal and transverse quantum lattice vibrations
• Optical conductivity of doped Mott insulator: the interplay between correlation and electron-phonon interaction
• Polaronic approach to strongly correlated electron system with strong electron-phonon interaction
• Optical and dc conductivities of cuprates: Spin-fluctuation scattering in the t-J model
• Optical conductivity in the t-J-Holstein Model
• Enhancement of phonon effects in photoexcited states of one-dimensional Mott insulators
• Optical Signature of a Crossover from Mott- to Slater-type Gap in Sr${}_2$Ir${}_{1-x}$Rh${}_x$O${}_4$
• Electronic transport in AlMn(Si) and AlCuFe quasicrystals: Break-down of the semiclassical model
• Dynamic Competition Between Hubbard and Superexchange Interactions Selectively Localizes Electrons and Holes Through Polarons
• Optical properties of the Holstein-t-J model from dynamical mean-field theory