Zeeman splitting and nonlinear field-dependence in superfluid 3He

TL;DR

This paper investigates the acoustic Faraday effect in superfluid 3He at high magnetic fields, revealing nonlinear effects and measuring the Zeeman splitting of the ISQ mode, with polarization rotations up to 1710 degrees.

Contribution

It provides the first detailed analysis of nonlinear field effects and precise Zeeman splitting measurements in superfluid 3He at high magnetic fields.

Findings

Observed polarization rotations up to 1710 degrees.

Identified nonlinear field effects in superfluid 3He.

Determined the Zeeman splitting of the ISQ mode.

Abstract

We have studied the acoustic Faraday effect in superfluid 3He up to significantly larger magnetic fields than in previous experiments achieving rotations of the polarization of transverse sound as large as 1710^{\circ}. We report nonlinear field effects, and use the linear results to determine the Zeeman splitting of the imaginary squashing mode (ISQ) frequency in 3He-B.