Correlation Effects in a One-Dimensional Quarter-Filled Electron System with Repulsive Interactions

Abstract

A one-dimensional electron system at quarter-filling has been examined by applying the renormalization group method to a bosonized model with on-site (U) and nearest-neighbor (V) repulsive interactions. By evaluating both normal scattering and Umklapp scattering perturbatively, we obtain a phase diagram in which a metallic state with a 2k_F spin density wave (k_F is the Fermi wave number) moves into an insulating state with charge disproportionation of a 4k_F charge density wave with an increase in both U and V. The effect of the next-nearest-neighbor repulsion is also discussed.

4 pages, 2 figures, to be published in J. Phys. Soc. Jpn. 69 (2000) No. 3

References in corpus (2)

• Role of Phase Variables in Quarter-Filled Spin Density Wave States
• Spin-Gap Phases in Tomonaga-Luttinger Liquids

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• New possibility of the ground state of quarter-filled one-dimensional strongly correlated electronic system interacting with localized spins
• Effects of Next-Nearest-Neighbor Repulsion on One-Dimensional Quarter-Filled Electron Systems
• Charge-Ordered State versus Dimer-Mott Insulator at Finite Temperatures
• Interplay of strongly correlated electrons and localized Ising moments in one-dimension
• Charge and spin Drude weight of the one-dimensional extended Hubbard model at quarter-filling
• Combined Analysis of Numerical Diagonalization and Renormalization Group methods for the One-Dimensional $U$-$V$ Model at Quarter filling
• Finite-Temperature Charge-Ordering Transition and Fluctuation Effects in Quasi-One-Dimensional Electron Systems at Quarter Filling
• Competition of Dimerization and Charge Ordering in the Spin-Peierls State of Organic Conductors
• Quarter-filled extended Hubbard model with alternating transfer integral: Two-dimensional Ising transition in the ground state
• Incommensurate Mott Insulator in One-Dimensional Electron Systems close to Quarter Filling
• Spontaneous symmetry breaking in correlated wave functions
• Magnetic Field Effect in One-Dimensional Charge Ordering Systems
• Two Kinds of the Coexistent States in One-Dimensional Quarter -Filled Systems under Magnetic Fields
• Local density of states of a quarter-filled one-dimensional Mott insulator with a boundary
• Possible Metastable State Triggered by Competition of Peierls State and Charge Ordered State
• Correlation function for the one-dimensional extended Hubbard model at quarter filling
• Coexisting orders in the quarter-filled Hubbard chain with elastic deformations