One-dimensional quantum wire formed at the boundary between two insulating LaAlO3/SrTiO3 interfaces

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Abstract

We grow a tiled structure of insulating two-dimensional LaAlO3/SrTiO3 interfaces composed of alternating one and three LaAlO3 unit cells. The boundary between two tiles is conducting. At low temperatures this conductance exhibits quantized steps as a function of gate voltage indicative of a one-dimensional channel. The step size of half the quantum of conductance is evidence for the absence of spin degeneracy.

Original languageEnglish
Article number136801
JournalPhysical Review Letters
Volume112
Issue number13
DOIs
StatePublished - 1 Dec 2013

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