Evidence for a Spatially-Modulated Superfluid Phase of ${}^3$He under Confinement

Abstract

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.

9 pages, 9 figures

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• Experimental Detection of the Quantum Phases of a Three-Dimensional Topological Insulator on a Spin Quantum Simulator
• Exceeding the Landau superflow speed limit with topological Bogoliubov Fermi surfaces
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• Fragility of surface states in topological superfluid ${}^3$He
• Phase-dependent heat transport in Josephson junctions with p-wave superconductors and superfluids
• Triangular pair density wave in confined superfluid ${}^3$He
• Spin-Current Instability at a Magnetic Domain Wall in a Ferromagnetic Superfluid: a Generation Mechanism of Eccentric Fractional Skyrmions
• Topological nodal line in superfluid ${}^3$He and the Anderson theorem
• Thermal transport of helium-3 in a strongly confining channel
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• Radial Fulde-Ferrell-Larkin-Ovchinnikov state in a population-imbalanced Fermi gas
• A-B transition in superfluid ${}^3$He and cosmological phase transitions
• Feasibility of a Fulde-Ferrell-Larkin-Ovchinnikov superfluid Fermi atomic gas
• Vortex-bound solitons in topological superfluid ${}^3$He
• One dimensional nexus objects, network of Kibble-Lazarides-Shafi string walls, and their spin dynamic response in polar distorted B-phase of ${}^3$He
• Synchronization in rotating supersolids
• Weyl Fermions and Broken Symmetry Phases of Laterally Confined ${}^3$He Films
• Superfluid Optomechanics with Phononic Nanostructures
• Surface State Dissipation in Confined 3He-A
• Transport of bound quasiparticle states in a two-dimensional boundary superfluid
• Anomalous dispersion of shear waves in dipolar supersolids
• Strong-coupling corrections to hard domain walls in superfluid 3He-B
• Two roads to antispacetime in polar distorted B phase: Kibble wall and half-quantum vortex
• Superfluid phase transition of nanoscale-confined helium-3
• Helical spin texture in a thin film of superfluid ${}^3$He
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• Single-fluid model for rotating annular supersolids and its experimental implications
• Chiral superfluid helium-3 in the quasi-two-dimensional limit
• Dimensional crossover of superfluid ${}^3$He in a magnetic field
• Spin-triplet pair density wave superconductors
• Designing edge currents using mesoscopic patterning in chiral d-wave superconductors