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Zero helicity states in the LaAlO3/SrTiO3 interface

2015/09/05 by Edinardo I. B. Rodrigues, Alfredo A. Vargas-Paredes, Rodrigues, Edinardo I. B. +5
Physics and Astronomy · #FOS: Physical sciences #Superconductivity (cond-mat.supr-con) #cond-mat.supr-con

paper · pdf · doi:10.48550/arxiv.1509.01742

5 pages, 7 figures

arxiv created 2015/10/14 · arxiv updated 2015/10/15

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/SrTiO3 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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