Transport and thermoelectric properties of the LaAlO${}_3$/SrTiO${}_3$ interface

Abstract

The transport and thermoelectric properties of the interface between SrTiO${}_3$ and a 26-monolayer thick LaAlO${}_3$-layer grown at high oxygen-pressure have been investigated at temperatures from 4.2 K to 100 K and in magnetic fields up to 18 T. For $T>$ 4.2 K, two different electron-like charge carriers originating from two electron channels which contribute to transport are observed. We probe the contributions of a degenerate and a non-degenerate band to the thermoelectric power and develop a consistent model to describe the temperature dependence of the thermoelectric tensor. Anomalies in the data point to an additional magnetic field dependent scattering.

arXiv comment7 pages, 4 figures

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Cited by in corpus (5)

• The mechanism of spin-orbit coupling in a 2D oxide interface
• Temperature-Dependent Band Structure of SrTiO${}_3$ Interfaces
• Nature of electrons from oxygen vacancies and polar catastrophe at LaAlO3/SrTiO3 interfaces
• Electron mobility of a two-dimensional electron gas at the interface of SrTiO${}_3$ and LaAlO${}_3$
• Quantum oscillations in an optically-illuminated two-dimensional electron system at the LaAlO${}_3$/SrTiO${}_3$ interface