Electron Bubbles and Weyl Fermions in Chiral Superfluid 3He-A

2016 International Symposium on Quantum Fluids and Solids

Authors: Oleksii Shevtsov and J. A. Sauls
Department of Physics & Astronomy, Northwestern University, Evanston, IL 60208
August 12, 2016

Abstract: The A phase of 3He is a chiral superfluid that spontaneously breaks parity and time-reversal symmetries. This was beautifully demonstrated by the observation of an anomalous Hall mobility of electron bubbles by the RIKEN group. We present the theory of the anomalous Hall effect for negative ions in superfluid 3He-A based on a full quantum mechanical treatment of multiple scattering of Bogoliubov quasiparticles by ions embedded in the chiral superfluid. Quantum interference leads to the transverse force on the ions. Our results are in quantitative agreement with the RIKEN experiments, providing a microscopic view of the underlying processes responsible for the anomalous Hall effect.

This research was supported by NSF Grant: DMR-1508730

Slides: [PDF]

Phys. Rev. B 2016: [Paper]
QFS2016 Proceedings: [Eprint]

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Last update: August, 2016