Uniform spin susceptibility tensor and quasiparticle density of states in organic quasi-one-dimensional superconductors

TL;DR

This paper analyzes how the order parameter symmetry in organic quasi-one-dimensional superconductors affects their quasiparticle density of states and spin susceptibility, aiming to identify the pairing symmetry consistent with experimental data.

Contribution

It provides theoretical calculations linking order parameter symmetry to measurable bulk properties, helping to narrow down possible pairing symmetries in these materials.

Findings

Triplet pairing symmetry may be present in some organic superconductors

Calculations relate order parameter symmetry to density of states and spin susceptibility

Results help interpret experimental evidence for pairing symmetry

Abstract

We perform calculations relating the order parameter symmetry of organic quasi-one-dimensional superconductors to the bulk quasiparticle density of states and the bulk uniform spin susceptibility tensor at finite temperatures. Current experimental results suggest that some organic quasi-one-dimensional superconductors may exhibit triplet pairing symmetry. The purpose of our analysis is to attempt to narrow down the number of possibilities for the symmetry of the order parameter based on the experimental evidence.