Long ranged ballistic transport in an oxide-based quantum wire
1 : School of Physics and Astronomy, Tel Aviv University
(TAU)
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School of physics and Astronomy, Tel Aviv University, 69978, Tel Aviv, Israel -
Israel
We use the polar nature of the interface between LaAlO3 and SrTiO3 to design a new type of quantum wires. The conductance in these wires is quantized with a step size consistent with spin polarization in the wire. This spin polarization combined with the spin-orbit interaction result in a long ballistic range of the order of 4mm. Our results show that the new wire can be used in future spin electronic devices and as a platform for studying new exotic fermionic orders.