Zero helicity states in the LaAlO3/SrTiO3LaAlO_3/SrTiO_3 interface

preprint2015arXivOpen access

Abstract

We propose a kinetically driven mechanism based on the breaking of the spatial reflection symmetry to describe the magnetic moment and the torque observed by Lu-Li et al. (Ref. 1) for the LaAlO3/SrTiO3LaAlO_3/SrTiO_3 system. We find that the itinerant electrons are in a zero helicity state and predict the existence of charge inhomogeneities that cross the interface at constant rate. There is mass and thickness anisotropies between the two sides of the interface.

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