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Quantum transport in oxide nanostructures

By Cheng Cen, Daniela F. Bogorin, Vanita Srinivasa and Jeremy Levy


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

Topics: Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science
Year: 2011
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