Applied Physics Letters · 2014 · 61 citations · 38 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsMaterials PhysicsSolid State PhysicsMagnetic OxidesOxide SemiconductorsStrongly Correlated Electron SystemsSuperconducting MaterialsSuperconducting Thin FilmsSurface PhysicsKosterlitz-thouless TransitionSuperconducting CeramicsSuperconducting Critical TemperatureSuperconducting HeterostructuresSuperconducting NanostructuresSuperconductivity In Low-dimensional SystemsTwo-dimensional Electron GasesTwo-dimensional Superconductors
Novel low dimensional quantum phenomena at (110) LaAlO3/SrTiO3 (LAO/STO) interfaces are expected after the quasi two dimensional electron gas similar to that of (001) LAO/STO interfaces was found at this (110) system. Here, we report the two dimensional superconductivity with a superconducting transition temperature of ≅ 184 mK at (110) LAO/STO interfaces. The two dimensional characteristics of the superconductivity are consistent with our analysis based on a Berezinskii-Kosterlitz-Thouless transition. The estimated superconducting layer thickness is about 18 nm. This discovery may inspire new studies of LAO/STO interfaces and open additional opportunities for design of novel oxide electronic devices.
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A high-mobility electron gas at the LaAlO3/SrTiO3 heterointerface
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Natural Sciences, Materials Engineering, Materials Science +14
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