Spin-density wave versus superconducting fluctuations for quasi-one-dimensional electrons in two chains of Tomonaga-Luttinger liquids

Abstract

We study possible states at low temperatures by applying the renormalization-group method to two chains of Tomonaga-Luttinger liquids with both repulsive intrachain interactions and interchain hopping. As the energy decreases below the hopping energy, three distinct regions I, III, and II appear successively depending on properties of fluctuations. The crossover from the spin-density wave (SDW) state to superconducting (SC) state takes place in region III where there are the excitation gaps of transverse charge and spin fluctuations. The competition between SDW and SC states in region III is crucial to understanding the phase diagram in the quasi-one-dimensional organic conductors.

11 pages, Revtex format, 1 figure, to be published in Phys. Rev. B

References in corpus (3)

• Weak Coupling Phase Diagram of the Two Chain Hubbard Model
• Phases of two coupled Luttinger liquids
• Chiral Anomaly and Spin Gap in One-Dimensional Interacting Fermions

Cited by in corpus (5)

• Orbital current patterns in doped two-leg Cu-O Hubbard ladders
• Superconducting instability in 3 band metallic nanotubes
• Properties of Fluctuations in Two Coupled Chains of Luttinger Liquids
• Two-Coupled Chains with Spin-Anisotropic Backward Scattering
• Response Functions of Two-Coupled Chains of Tomonaga-Luttinger Liquids