Superfluidity enhanced by spin-flip tunnelling in the presence of a magnetic field
Superfluidity enhanced by spin-flip tunnelling in the presence of a magnetic field
Abstract It is well-known that when the magnetic field is stronger than a critical value, the spin imbalance can break the Cooper pairs of electrons and hence hinder the superconductivity in a spin-singlet channel. In a bilayer system of ultra-cold Fermi gases, however, we demonstrate that the critical value of …