Electronic structure of the quasi-one-dimensional organic conductor TTF-TCNQ

Abstract

We study the electronic structure of the quasi-one-dimensional organic conductor TTF-TCNQ by means of density-functional band theory, Hubbard model calculations, and angle-resolved photoelectron spectroscopy (ARPES). The experimental spectra reveal significant quantitative and qualitative discrepancies to band theory. We demonstrate that the dispersive behavior as well as the temperature-dependence of the spectra can be consistently explained by the finite-energy physics of the one-dimensional Hubbard model at metallic doping. The model description can even be made quantitative, if one accounts for an enhanced hopping integral at the surface, most likely caused by a relaxation of the topmost molecular layer. Within this interpretation the ARPES data provide spectroscopic evidence for the existence of spin-charge separation on an energy scale of the conduction band width. The failure of the one-dimensional Hubbard model for the {\it low-energy} spectral behavior is attributed to interchain coupling and the additional effect of electron-phonon interaction.

18 pages, 9 figures

References in corpus (13)

• One-Dimensional Fermi liquids
• The spectral weight of the Hubbard model through cluster perturbation theory
• Spectroscopic signatures of spin-charge separation in the quasi-one-dimensional organic conductor TTF-TCNQ
• Shadow band in the one-dimensional large $U$ Hubbard model
• Strong-Coupling Perturbation Theory of the Hubbard Model
• Evidence of Electron Fractionalization from Photoemission Spectra in the High Temperature Superconductors
• Spectral Functions of One-dimensional Models of Correlated Electrons
• Scanning Tunneling Microscopy in TTF-TCNQ :direct proof of phase and amplitude modulated charge density waves
• Bounded Luttinger liquids as a universality class of quantum critical behavior
• Surface characterization and surface electronic structure of organic quasi-one-dimensional charge transfer salts
• Finite-Energy Landau Liquid Theory for the 1D Hubbard Model: Pseudoparticle Energy Bands and Degree of Localization/Delocalization
• Finite temperature spectral-functions of strongly correlated one-dimensional electron systems
• One-dimensional spinless fermion model with competing interactions beyond half-filling

Cited by in corpus (49)

• One-Dimensional Quantum Liquids: Beyond the Luttinger Liquid Paradigm
• Spectral function of the one-dimensional Hubbard model away from half filling
• Angle resolved photoemission spectroscopy reveals spin charge separation in metallic MoSe2 grain boundary
• Tomonaga-Luttinger parameters for doped Mott insulators
• Angle-resolved photoemission spectroscopy with quantum gas microscopes
• Parton theory of ARPES spectra in anti-ferromagnetic Mott insulators
• Spectral properties of a spin-incoherent Luttinger Liquid
• Finite-Energy Spectral-Weight Distributions of a 1D Correlated Metal
• Coulomb parameters and photoemission for the molecular metal TTF-TCNQ
• Charge dynamics in half-filled Hubbard chains with finite on-site interaction
• One-Electron Singular Branch Lines of the Hubbard Chain
• A first principles study on organic molecules encapsulated BN nanotubes
• Phonon Effects on Spin-Charge Separation in One Dimension
• Temperature dependence of spectral functions for the one-dimensional Hubbard model: comparison with experiments
• Dynamical Functions of a 1D Correlated Quantum Liquid
• Spin, charge and single-particle spectral functions of the one-dimensional quarter filled Holstein model
• Charge and Spin Quantum Fluids Generated by Many-Electron Interactions
• Dominant fifth-order correlations in doped quantum anti-ferromagnets
• Is spin-charge separation observable in a transport experiment?
• Electronic Characterization of a Charge-Transfer Complex Monolayer on Graphene
• Pseudoparticle approach to 1D integrable quantum models
• One-dimensional versus two-dimensional correlation effects in the oxyhalides TiOCl and TiOBr
• Interplay of charge, spin and lattice degrees of freedom on the spectral properties of the one-dimensional Hubbard-Holstein model
• Steady-state properties of a thermodynamically unbalanced Fermi gas
• Phase Diagram of the $t$--$U$--$V_1$--$V_2$ Model at Quarter Filling
• Are the renormalized band widths in TTF-TCNQ of structural or electronic origin? - An angular dependent NEXAFS study
• Local density of states of the one-dimensional spinless fermion model
• One-electron singular spectral features of the 1D Hubbard model at finite magnetic field
• Spectral functions of two-band spinless fermion and single-band spin-1/2 fermion models
• Charge and Spin Transport in the One-dimensional Hubbard Model
• Anomalous temperature dependence of the single-particle spectrum in the organic conductor TTF-TCNQ
• Finite energy spectral function of an anisotropic 2D system of coupled Hubbard chains
• Tracking spin and charge with spectroscopy in spin-polarised 1D systems
• Superconductivity Driven by Chain Coupling and Electronic Correlations
• Search for Ferromagnetism in doped semiconductors in the absence of transition metal ions
• One-particle spectral functions of the one-dimensional Fermionic Hubbard model with one fermion per site at zero and finite magnetic fields
• The TTF finite-energy spectral features in photoemission of TTF-TCNQ: The Hubbard-chain description
• Manipulating the Tomonaga-Luttinger exponent by electric field modulation
• Analysis of time-resolved single-particle spectrum on the one-dimensional extended Hubbard model
• Particle zoo in a doped spin chain: Correlated states of mesons and magnons
• Spectral microscopic mechanisms and quantum phase transitions in a 1D correlated problem
• Determination of screened Coulomb repulsion energies in organic molecular crystals: A real space approach
• Spinon and eta-spinon correlation functions
• The Hall effect in the organic conductor TTF-TCNQ: Choice of geometry for accurate measurements of highly anisotropic system
• Effects of finite-range interactions on the one-electron spectral properties of TTF-TCNQ
• Density of states anomalies in multichannel quantum wires
• U(1) slave-particle study of the finite-temperature doped Hubbard model in one and two dimensions
• Impact of electron-phonon coupling on electron transport through T-shaped arrangements of quantum dots in the Kondo regime
• One-particle spectral function singularities in a one-dimensional gas of spin-1/2 fermions with repulsive delta-function interaction