Effects of dimerization and interchain one-particle hopping in a weakly coupled dimerized chain system at quarter filling

TL;DR

This study investigates how intrachain dimerization and interchain hopping influence the low-energy properties of a quasi-one-dimensional dimerized chain system at quarter filling, using the perturbative renormalization group method.

Contribution

It provides new insights into the effects of dimerization and interchain hopping on low-energy behaviors in quarter-filled systems, comparing TMTTF and TMTSF compounds.

Findings

Differences in low-energy properties between TMTTF and TMTSF compounds.

Impact of interchain hopping on electronic properties.

Role of dimerization in low-energy excitations.

Abstract

Effects of the intrachain dimerization and the interchain one-particle hopping, $t_{b}$, in a quasi-one-dimensional dimerized chain system at quarter filling have been studied, based on the perturbative renormalization group (PRG) approach. Based on the results, we discuss difference in the low-energy properties between TMTTF and TMTSF compounds.