Interplay between spin-density-wave and superconducting states in quasi-one-dimensional conductors

Details Interplay between spin-density-wave and superconducting states in quasi-one-dimensional conductors Interplay between spin-density-wave and superconducting states in quasi-one-dimensional conductors

2001-02-07

arxiv.org/abs/cond-mat/0102139v1

published with minor corrections in Eur. Phys. J. B Vol. 21, 219-228 (2001)

Physics

Condensed Matter

Strongly Correlated Electrons

10 pages RevTex,4 Figures, submitted to EPJB

Scientific paper

10.1007/s100510170198

The interference between spin-density-wave and superconducting instabilities in quasi-one-dimensional correlated metals is analyzed using the renormalization group method. At the one-loop level, we show how the interference leads to a continuous crossover from a spin-density-wave state to unconventional superconductivity when deviations from perfect nesting of the Fermi surface exceed a critical value. Singlet pairing between electrons on neighboring stacks is found to be the most favorable symmetry for superconductivity. The consequences of non uniform spin-density-wave pairing on the structure of phase diagram within the crossover region is also discussed.

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