Quantum transport in oxide nanostructures

Details Quantum transport in oxide nanostructures Quantum transport in oxide nanostructures

2011-03-15

arxiv.org/abs/1103.3036v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

We describe magnetotransport experiments performed on Hall crosses made from quantum wires at LaAlO3/SrTiO3 interfaces. Shubnikov-de Haas oscillations measured in a 14-nm wide structure exhibit modulations that are consistent with spin-orbit coupling or valley degeneracies. Hall measurements performed on the 6 nm-wide Hall cross reveal dissipative coupling to magnetic phases. Hall plateaus are observed that deviate significantly from two-dimensional quantum Hall counterparts. Non-monotonic dips in the Hall resistance are attributed to one-dimensional confinement and spin-orbit coupling.

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