  A new excitation mode has been predicted to exist in the unitary Fermi gas.
It has a form of a spin-polarized impurity, which was dubbed as ferron. It is
characterized by a closed nodal surface of the pairing field surrounding a
partially spin-polarized superfluid region, where the phase differs by $\pi$.
In this paper, we discuss the effect of temperature on the generation of the
ferron and the adiabaticity of the spin-polarizing potential together with
ferron's ground state properties.
