Spin waves in a two dimensional p-wave superconductor: Sr$_2$RuO$_4$

TL;DR

This paper investigates spin excitations in a 2D p-wave superconductor, specifically Sr$_2$RuO$_4$, analyzing their polarization, spectrum, and potential experimental signatures.

Contribution

It provides a detailed analysis of spin wave polarization and spectrum in Sr$_2$RuO$_4$, advancing understanding of its unconventional superconducting state.

Findings

Identification of spin wave polarization and spectrum

Discussion of experimental consequences for Sr$_2$RuO$_4$

Insights into spin excitations in p-wave superconductors

Abstract

We study spin excitations in a two dimensional p-wave superconductor with ${\vec \Delta} = {\hat d}({\hat k}_1 \pm i {\hat k}_2)$ symmetry in the context of the newly discovered superconducting Sr$_2$RuO$_4$. The polarization and spectrum of spin wave excitations are identified and their experimental consequences are discussed.