Displaced Drude peak from $\pi$-ton vertex corrections

Abstract

Correlated electron systems often show strong bosonic fluctuations, e.g., of antiferromagnetic nature, around a large wave vector such as $\mathbf{q}=(\pi ,\pi \dots )$. These fluctuations can give rise to vertex corrections to the optical conductivity through the (transversal) particle-hole channel, coined $\pi$-ton contributions. Previous numerical results differed qualitatively on how such vertex corrections alter the optical conductivity. Here, we clarify that $\pi$-ton vertex corrections lead to a displaced Drude peak for correlated metals. The proximity and enhancement of the effect when approaching a phase transition of, e.g., antiferromagnetic nature can be utilized for discriminating $\pi$-tons in experiments from other physics leading to a displaced Drude peak.

arXiv comment12 pages, 7 figures

References in corpus (47)

• Fermi-liquid instabilities at magnetic quantum phase transitions
• Diagrammatic routes to nonlocal correlations beyond dynamical mean field theory
• Dynamical vertex approximation - a step beyond dynamical mean field theory
• Universality of the Mott-Ioffe-Regel limit in metals
• Optical Conductivity in Mott-Hubbard Systems
• A New Iterative Perturbation Scheme for Lattice Models with Arbitrary Filling
• Non-Fermi liquid behavior of SrRuO_3 -- evidence from infrared conductivity
• Origins of bad metal conductivity and the insulator-metal transition in the rare-earth nickelates
• Tracking the Footprints of Spin Fluctuations: A MultiMethod, MultiMessenger Study of the Two-Dimensional Hubbard Model
• Comparing pertinent effects of antiferromagnetic fluctuations in the two and three dimensional Hubbard model
• Strange metallicity in the doped Hubbard model
• Non-Fermi liquid behavior and scaling of low frequency suppression in optical conductivity spectra of CaRuO${}_3$
• Optical detection of charge-density-wave instability in the non-magnetic kagome metal KV${}_3$Sb${}_5$
• Influence of Spatial Correlations in Strongly Correlated Electron Systems: Extension to Dynamical Mean Field Approximation
• Optical conductivity of the half-filled Hubbard chain
• Excitons in one-dimensional Mott insulators
• Efficient implementation of the parquet equations -- role of the reducible vertex function and its kernel approximation
• Low-energy optical properties of the non-magnetic kagome metal CsV${}_3$Sb${}_5$
• Conductivity in the square lattice Hubbard model at high temperatures: importance of vertex corrections
• Absence of a pseudogap in the in-plane infrared response of Bi2Sr2CaCu2O(8+d)
• Optical excitations in a one-dimensional Mott insulator
• Bad Metals from Fluctuating Density Waves
• Optical and DC conductivity of the two-dimensional Hubbard model in the pseudogap regime and across the antiferromagnetic quantum critical point, including vertex corrections
• Collective Charge Excitations of Strongly Correlated Electrons, Vertex Corrections and Gauge Invariance
• Optical response of correlated electron systems
• Generic optical excitations of correlated systems: $\pi$-tons
• Electron Correlation Driven Heavy-Fermion Formation in LiV2O4
• Transport properties of the one-dimensional Hubbard model at finite temperature
• Spin-reorientation-induced band gap in Fe${}_3$Sn${}_2$: Optical signatures of Weyl nodes
• Optical conductivity in cluster dynamical mean field theory: formalism and application to high temperature superconductors
• Infrared probe of the electronic structure and charge dynamics in Na${}_{0.7}$CoO${}_2$
• Rise and Fall of Landau's Quasiparticles While Approaching the Mott Transition
• Bandwidth tuning triggers interplay of charge order and superconductivity in two-dimensional organic materials
• Bad-Metallic Behavior of Doped Mott Insulators
• In-plane optical response of Bi2Sr2CuO6
• Displaced Drude peak and bad metal from the interaction with slow fluctuations
• Excitons in Mott insulators
• Optical conductivity of a two-dimensional metal at the onset of spin-density-wave order
• Parquet approximation for molecules: spectrum and optical conductivity of the Pariser-Parr-Pople model
• Infrared properties of La${}_{2-x}$(Ca,Sr)${}_x$CaCu${}_2$O${}_{6+\delta }$ single crystals
• Optical Conductivity and Hall Coefficient in High-Tc Superconductors: Significant Role of Current Vertex Corrections
• Transient localization from the interaction with quantum bosons
• Diagrammatic study of optical excitations in correlated systems
• Parquet dual fermion approach for the Falicov-Kimball model
• Optical Conductivity of the two dimensional Hubbard model: vertex corrections, emergent Galilean invariance and the accuracy of the single-site dynamical mean field approximation
• Optical conductivity of the Hubbard chain away from half filling
• Non-equilibrium evolution of the optical conductivity of the weakly interacting Hubbard model: Drude response and $\pi$-ton type vertex corrections

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• Beyond-quasiparticle transport with vertex correction: self-consistent ladder formalism for electron-phonon interactions
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