Effects of Next-Nearest-Neighbor Repulsion on One-Dimensional Quarter-Filled Electron Systems

Abstract

We examine effects of the next-nearest-neighbor repulsion on electronic states of a one-dimensional interacting electron system which consists of quarter-filled band and interactions of on-site and nearest-neighbor repulsion. We derive the effective Hamiltonian for the electrons around wave number $\pm \kf$ ($\kf$: Fermi wave number) and apply the renormalization group method to the bosonized Hamiltonian. It is shown that the next-nearest-neighbor repulsion makes $4\kf$-charge ordering unstable and suppresses the spin fluctuation. Further the excitation gaps and spin susceptibility are also evaluated.

19 pages, 8 figures, submitted to J. Phys. Soc. Jpn

References in corpus (4)

• Mechanism of CDW-SDW Transition in One Dimension
• Correlation Effects in a One-Dimensional Quarter-Filled Electron System with Repulsive Interactions
• Role of Phase Variables in Quarter-Filled Spin Density Wave States
• Spin-Gap Phases in Tomonaga-Luttinger Liquids

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