Triplet superconducting pairing and density-wave instabilities in organic conductors

Abstract

Using a renormalization group approach, we determine the phase diagram of an extended quasi-one-dimensional electron gas model that includes interchain hopping, nesting deviations and both intrachain and interchain repulsive interactions. We find a close proximity of spin-density- and charge-density-wave phases, singlet d-wave and triplet f-wave superconducting phases. There is a striking correspondence between our results and recent puzzling experimental findings in the Bechgaard salts, including the coexistence of spin-density-wave and charge-density-wave phases and the possibility of a triplet pairing in the superconducting phase.

4 pages, 5 eps figures

Cited by in corpus (5)

• Renormalization group approach to interacting fermion systems in the two-particle-irreducible formalism
• Symmetries of the quasi-1d Bechgaard salts superconducting state in an applied magnetic field
• Magnetic field induced singlet - triplet phase transition in quasi one-dimensional organic superconductors
• Properties of superconductivity on the density wave background with small ungapped Fermi surface pockets
• Competition between different order parameters in a quasi-one-dimensional superconductor