The superconducting transport properties of the conducting LaAlO 3/SrTiO 3 interface have
been investigated in perpendicular and parallel magnetic fields. A large anisotropy in the
transport properties is measured and the two-dimensional nature of the superconducting
gas is confirmed. Analyses of the resistance versus temperature and magnetic field, as well
as of the correlation length as a function of the magnetic field close to the superconducting
critical temperature (about 200 mK), yield an estimate of∼ 10 nm for the superconducting …