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arXiv · 1908.01779

Stabilized Pair Density Wave via Nanoscale Confinement of Superfluid $^3$He

A. J. Shook·V. Vadakumbatt·P. Senarath Yapa·C. Doolin·R. Boyack·P. H. Kim·G. G. Popowich·F. Souris·H. Christani·J. Maciejko·J. P. Davis
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Abstract

Superfluid $^3$He under nanoscale confinement has generated significant interest due to the rich spectrum of phases with complex order parameters that may be stabilized. Experiments have uncovered a variety of interesting phenomena, but a complete picture of superfluid $^3$He under confinement has remained elusive. Here, we present phase diagrams of superfluid $^3$He under varying degrees of uniaxial confinement, over a wide range of pressures, which elucidate the progressive stability of both the $A$-phase, as well as a growing region of stable pair density wave (PDW) state.

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A. J. Shook, V. Vadakumbatt, P. Senarath Yapa, C. Doolin, R. Boyack, P. H. Kim, G. G. Popowich, F. Souris, H. Christani, J. Maciejko, J. P. Davis. 2019-08-05. Stabilized Pair Density Wave via Nanoscale Confinement of Superfluid $^3$He. https://doi.org/10.1103/physrevlett.124.015301

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