Crossover from BEC-like to BCS-like behavior and paramagnetic Meissner effect in LaAlO3/KTaO3(111) interface superconductivity.
Superconductivity has been discovered in a variety of heterostructures, yet the general principles governing interface superconductivity remain elusive. Superfluid density, or superfluid stiffness, is a key parameter for characterizing the superconducting state, and its relation to the transition temperature Tc is cent...