Spectroscopy of Oscillation Modes in Homogeneously Precessing Domain of Superfluid 3He-B

TL;DR

This paper investigates oscillation modes in superfluid 3He-B using nuclear magnetic resonance and identifies localized and chaotic behaviors.

Contribution

The study identifies new oscillation modes and chaotic motion in the homogeneously precessing domain of superfluid 3He-B.

Findings

Oscillation modes with frequencies increasing with HPD frequency shift were identified.

Some modes are localized near cell walls, others in bulk liquid as soliton oscillations.

Chaotic motion of the HPD was observed in specific temperature and frequency ranges.

Abstract

We study the homogeneously precessing domain (HPD) in superfluid \documentclass[12pt]{minimal}
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\begin{document}$$^3$$\end{document}3He-B in a regular continuous-wave nuclear magnetic resonance (CW NMR) experiment. Using Fourier analysis of CW NMR time traces, we identify several oscillation modes with frequency monotonically increasing with the frequency shift of the HPD. Some of these modes are localized near the cell walls, while others are localized in bulk liquid and can be interpreted as oscillations of \documentclass[12pt]{minimal}
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\begin{document}$$\vartheta$$\end{document}ϑ-solitons. We also observe chaotic motion of the HPD in a certain range of temperatures and frequency shifts.

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