Odd-frequency Superconductivity on a Quasi-one-dimensional Triangular Lattice in the Hubbard Model

TL;DR

This paper investigates the potential realization of odd-frequency superconductivity in a quasi-one-dimensional triangular lattice Hubbard model using RPA and FLEX methods, finding conditions that enhance odd-frequency spin-singlet p-wave pairing.

Contribution

It demonstrates the possibility of enhancing odd-frequency spin-singlet p-wave pairing in a quasi-one-dimensional triangular lattice Hubbard model, using RPA and FLEX approximations.

Findings

Odd-frequency spin-singlet p-wave pairing can be enhanced.

Quasi-one-dimensional isosceles triangular lattice favors odd-frequency pairing.

The study provides theoretical insights into unconventional superconductivity mechanisms.

Abstract

In order to clarify whether the odd-frequency superconductivity can be realized or not, we study a quasi-one-dimensional triangular lattice in the Hubbard model using the random phase approximation (RPA) and the fluctuation exchange (FLEX) approximation. We find that odd-frequency spin-singlet p-wave pairing can be enhanced on a quasi-one-dimensional isosceles triangular lattice.