Coexistence of Triplet Superconductivity and Spin Density Wave

TL;DR

This paper explores the theoretical coexistence of spin density wave and triplet superconductivity in quasi-one-dimensional metals, proposing an intermediate phase with unique magnetic and superconducting properties influenced by pressure.

Contribution

It introduces a model for coexistence of antiferromagnetism and triplet superconductivity, including a predicted flop transition affecting the order parameters.

Findings

Proposes an intermediate non-uniform phase with coexisting orders.

Predicts a flop transition in the spin density wave vector.

Highlights pressure-induced phase behavior in quasi-1D metals.

Abstract

We discuss the possibility of coexistence of spin density wave (antiferromagnetism) and triplet superconductivity as a particular example of a broad class of systems where the interplay of magnetism and superconductivity is important. We focus on the case of quasi-one-dimensional metals, where it is kown that antiferromagnetism is in close proximity to triplet superconductivity in the pressure versus temperature phase diagram. Over a range of pressures, we propose an intermediate non-uniform phase consisting of antiferromagnetic and triplet superconducting orders. In the coexistence region, we propose a flop transition in the spin density wave order parameter vector, which affects the nature of the superconducting state.