Dominant superconducting correlations in a Luttinger liquid induced by spin fluctuations

We study spin-fluctuation mediated divergent superconducting fluctuations in a Luttinger liquid proximity -coupled to a spin chain. Our study provides insight into how spin fluctuations can induce superconductivity in a strongly correlated non-Fermi liquid with repulsive electronic interactions only. The electrons in the system are governed by the Extended Hubbard Hamiltonian and are coupled to a chain of localized spins modeled by the spin -21 XX Hamiltonian. Using a multichannel Luttinger liquid approach, we determine the phase diagram of the metal chain. We find that spin-polarized triplet superconducting correlations persist for repulsive electronic interactions for sufficiently large interchain couplings.

Automated summary

This study investigates how spin fluctuations can induce superconductivity in a strongly correlated non-Fermi liquid with repulsive electronic interactions. By using a multichannel Luttinger liquid approach, the researchers find that spin-polarized triplet superconducting correlations persist in the system with sufficiently large interchain couplings.