Intermediate Coupling Theory of Electronic Ferroelectricity

Abstract

We calculate the quantum phase diagram of an extended Falicov-Kimball model for one and two-dimensional systems in the intermediate coupling regime. Even though some features of the phase diagram are obtained analytically, the main results are calculated with a constrained path Monte Carlo technique. We find that this regime is dominated by a Bose-Einstein condensation of excitons with a built-in electric polarization. The inclusion of a finite hybridization between the bands removes the condensate but reinforces the ferroelectricity.

References in corpus (5)

• Evidence for a Goldstone Mode in a Double Layer Quantum Hall System
• A Constrained Path Quantum Monte Carlo Method for Fermion Ground States
• Theory of Electronic Ferroelectricity
• Electronic Ferroelectricity in the Falicov-Kimball Model
• Linear and nonlinear optical characteristics of the Falicov-Kimball model

Cited by in corpus (50)

• Excitonic condensation in systems of strongly correlated electrons
• Electron-hole pair condensation at the semimetal-semiconductor transition: a BCS-BEC crossover scenario
• A BCS-BEC crossover in the extended Falicov-Kimball model: Variational cluster approach
• Spectral signatures of the BCS-BEC crossover in the excitonic insulator phase of the extended Falicov-Kimball model
• Bound state formation and nature of the excitonic insulator phase in the extended Falicov-Kimball model
• Chiral charge order in 1$T$-TiSe${}_2$: importance of lattice degrees of freedom
• On the existence of the excitonic insulator phase in the extended Falicov-Kimball model: an SO(2)-invariant slave-boson approach
• Order, criticality and excitations in the extended Falicov-Kimball model
• Weak-coupling Treatment of Electronic (Anti-)Ferroelectricity in the Extended Falicov-Kimball Model
• Hartree-Fock study of electronic ferroelectricity in the Falicov-Kimball model with $f$-$f$ hopping
• Fate of the excitonic insulator in the presence of phonons
• Exact-diagonalization study of exciton condensation in electron bilayers
• Excitonic resonances in the 2D extended Falicov-Kimball model
• Slave-boson field fluctuation approach to the extended Falicov-Kimball model: charge, orbital, and excitonic susceptibilities
• A New Era of Excitonic Insulators
• Exciton condensation due to electron-phonon interaction
• Phase diagram of the asymmetric Hubbard model
• Electric and magnetic multipoles and bond orders in excitonic insulators
• Structure-dependent ferroelectricity of niobium clusters (NbN, N=2-52)
• Non-classical dipoles in cold niobium clusters
• Slave boson theory of the extended Falicov-Kimball model
• Excitonic phase transition in the extended three-dimensional Falicov-Kimball model
• Competing Orderings in an Extended Falicov-Kimball Model
• BCS-BEC crossover in a $(t_{2g}{)}^4$ Excitonic Magnet
• Formation and condensation of excitonic bound states in the generalized Falicov-Kimball model
• Competing chiral and multipolar electric phases in the extended Falicov-Kimball model
• Excitonic Insulator State of the Extended Falicov-Kimball Model in the Cluster Dynamical Impurity Approximation
• Effects of Disorder on the Transport of Collective Modes in an Excitonic Condensate
• Finite-temperature photoemission in the extended Falicov-Kimball model: a case study for Ta${}_2$NiSe${}_5$
• Photoinduced metallization of excitonic insulators
• Ferroelectricity induced by cooperative orbital ordering and Peierls instability
• Collective Excitations and Stability of the Excitonic Phase in the Extended Falicov--Kimball Model
• An On-Site Density Matrix Description of the Extended Falicov--Kimball Model at Finite Temperatures
• One-Dimensional Magnetic Excitonic Insulators
• Charge Order in the Falicov-Kimball Model
• Layer Pseudospin Magnetism in Transition-Metal-Dichalcogenide Double-Moirés
• Generalized diagonalization scheme for many-particle systems
• The influence of nonlocal interactions on valence transitions and formation of excitonic bound states in the generalized Falicov-Kimball model
• Exciton condensation in an extended spinless Falicov Kimball model in the presence of orbital magnetic fields
• DMRG study of exciton condensation in the extended Falicov-Kimball model
• Phase coherence and spectral functions in the two-dimensional excitonic systems
• Probing phase coherence via density of states for strongly correlated excitons
• Instability of the chiral phase and electronic ferroelectricity in the extended Falicov--Kimball model
• Combined effects of local and nonlocal hybridization on formation and condensation of excitons in the extended Falicov-Kimball model
• Phase Separation and Charge-Ordered Phases of the d = 3 Falicov-Kimball Model at T>0: Temperature-Density-Chemical Potential Global Phase Diagram from Renormalization-Group Theory
• Exciton formation in strongly correlated electron-hole systems near the semimetal-semiconductor transition
• Effects of correlated hopping on electronic ferroelectricity in the extended Falicov-Kimball model in two dimensions
• Quantum coherent states of mass-imbalanced electron-hole system within optical microcavities
• Magnetic-field effect on excitonic condensation emergent in extended Falicov-Kimball model
• Excitonic Insulator and the Extended Falicov--Kimball Model Away from Half-Filling