Selected Publications

Phase Diagram of the Topological Superfluid 3He Confined in a Nanoscale Slab Geometry

Levitin, L. V., Bennett, R. G., Casey, A., Cowan, B., Saunders, J., Drung, D., Schurig, T. and Parpia, J. M.

The superfluid phases of helium-3 (He-3) are predicted to be strongly influenced by mesoscopic confinement. However, mapping out the phase diagram in a confined geometry has been experimentally challenging. We confined a sample of He-3 within a nanofluidic cavity of precisely defined geometry, cooled it, and fingerprinted the order parameter using a sensitive nuclear magnetic resonance spectrometer. The measured suppression of the p-wave order parameter arising from surface scattering was consistent with the predictions of quasi-classical theory. Controlled confinement of nanofluidic samples provides a new laboratory for the study of topological superfluids and their surface-and edge-bound excitations.

Science, 340, 841-844 (2013)

doi: 10.1126/science.1233621