Anisotropy of the superconducting transport properties of the LaAlO3/SrTiO3 interface

Reyren, N.; Gariglio, S.; Caviglia, A. D.; Jaccard, D.; Schneider, T.; Triscone, J.-M.
March 2009
Applied Physics Letters;3/16/2009, Vol. 94 Issue 11, p112506
Academic Journal
The superconducting transport properties of the conducting LaAlO3/SrTiO3 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 layer thickness.


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