Author(s): S. Autti, V. V. Dmitriev, J. T. Mäkinen, A. A. Soldatov, G. E. Volovik, A. N. Yudin, V. V. Zavjalov, and V. B. Eltsov
Researchers working with superfluid helium in a porous medium have generated vortices with half the quantum unit of fluid flow.
[Phys. Rev. Lett. 117, 255301] Published Wed Dec 14, 2016