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Triplet superconducting pairing and density-wave instabilities in organic conductors

J. C. Nickel·R. Duprat·C. Bourbonnais·N. Dupuis
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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.

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J. C. Nickel, R. Duprat, C. Bourbonnais, N. Dupuis. 2005-12-15. Triplet superconducting pairing and density-wave instabilities in organic conductors. https://doi.org/10.1103/physrevlett.95.247001

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