Evidence for a Spatially-Modulated Superfluid Phase of $^3$He under Confinement
| Autor: | Levitin, Lev V., Yager, Ben, Sumner, Laura, Cowan, Brian, Casey, Andrew J., Zhelev, Nikolay, Bennett, Robert G., Parpia, Jeevak M., Saunders, John |
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| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Phys. Rev. Lett. 122, 085301 (2019) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevLett.122.085301 |
| Popis: | In superfluid $^3$He-B confined in a slab geometry, domain walls between regions of different order parameter orientation are predicted to be energetically stable. Formation of the spatially-modulated superfluid stripe phase has been proposed. We confined $^3$He in a 1.1 $\mu$m high microfluidic cavity and cooled it into the B phase at low pressure, where the stripe phase is predicted. We measured the surface-induced order parameter distortion with NMR, sensitive to the formation of domains. The results rule out the stripe phase, but are consistent with 2D modulated superfluid order. Comment: 9 pages, 9 figures |
| Databáze: | arXiv |
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