Strong magnetic field enhancement of spin triplet pairing arising from coexisting $2k_F$ spin and $2k_F$ charge fluctuations

Abstract

We study the effect of the magnetic field (Zeeman splitting) on the triplet pairing. We show generally that the enhancement of spin triplet pairing mediated by coexisting $2k_F$ spin and $2k_F$ charge fluctuations can be much larger than in the case of triplet pairing mediated by ferromagnetic spin fluctuations. We propose that this may be related to the recent experiment for (TMTSF)${}_2$ClO${}_4$, in which a possibility of singlet to triplet pairing transition has been suggested.

5 pages

References in corpus (3)

• Triplet superconducting pairing and density-wave instabilities in organic conductors
• Pairing Symmetry Competition in Organic Superconductors
• The Origin of the Charge Ordering and Its Relevance to Superconductivity in $\theta$-(BEDT-TTF)${}_2$X: The Effect of the Fermi Surface Nesting and the Distant Electron-Electron Interactions

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• Theoretical Aspects of Charge Correlations in $\theta$-(BEDT-TTF)${}_{2}X$
• Novel superconducting phenomena in quasi-one-dimensional Bechgaard salts
• On the Origin of the Anomalous Upper Critical Field in Quasi-One-Dimensional Superconductors
• Mechanism for the Singlet to Triplet Superconductivity Crossover in Quasi-One-Dimensional Organic Conductors
• Pairing mechanism of unconventional superconductivity in doped Kane-Mele model
• Pairing competition in a quasi-one-dimensional model of organic superconductors (TMTSF)${}_{2}X$ in magnetic field
• Role of charge fluctuation in Q1D organic superconductor (TMTSF)2ClO4
• Microscopic theory of a superconducting gap in the quasi-one-dimensional organic conductor (TMTSF)${}_2$ClO${}_4$: Model derivation and two-particle self-consistent analysis
• Mixing of odd- and even-frequency pairings in strongly correlated electron systems under magnetic field
• Superconducting and density-wave instabilities of low dimensional conductors with a Zeeman coupling to a magnetic field