Direct observation of the superfluid phase transition in ultracold Fermi gases

Article Abstract:

A direct observation is reported of the superfluid phase transition in a strongly interacting gas of Li fermions through sudden changes in the shape of the thermal clouds. It is shown that the strong interactions in the superfluid core, which significantly deform the density profile of the majority spin component, drive the normal-to-superfluid transition at the critical population imbalance of 70 (plusmn) 5%.

Massachusetts, Analysis, Bose-Einstein condensation, Anisotropy, Properties, Fermi liquid

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A superconductor to superfluid phase transition in liquid metallic hydrogen

Article Abstract:

A report on a topological analysis of the projected phase of liquid metallic hydrogen, finding that it may present a new type of ordered quantum fluid is presented. The study concluded that in the presence of a magnetic field, metallic hydrogen would exhibit several phase transitions to ordered states, ranging from superconductors to superfluids.

United States, Superconductors

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Phase diagram of a two-component Fermi gas with resonant interactions

Article Abstract:

The article explains the phase diagram of a spin-polarized Fermi gas with resonant interactions, describing the effect of density imbalance and temperature on the superfluid phases. The findings show that a phase transition from fully paired superfluid to partially polarized normal gas takes place at zero temperature.

Technology application, Thermal properties, Tomography, Polarization (Electricity), Mechanical properties, Fermions

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