Transport and thermoelectric properties of the LaAlO3/SrTiO3 interface

A. Jost, V.K. Guduru, S. Wiedmann, J.C. Maan, U. Zeitler, S. Wenderich, A. Brinkman, H. Hilgenkamp

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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 to 100 K and in magnetic fields up to 18 T. For T>4.2K , two different electronlike charge carriers originating from two electron channels which contribute to transport are observed. We probe the contributions of a degenerate and a nondegenerate 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.
Original languageEnglish
Article number045304
Pages (from-to)-
JournalPhysical Review B (Condensed Matter and Materials Physics)
Issue number045304
Publication statusPublished - 2015


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