Quantum oscillations and subband properties of the two-dimensional electron gas at the LaAlO3/SrTiO3 interface
Source abstract
Abstract
We have performed high field magnetotransport measurements to investigate the interface electron gas in a high mobility SrTiO3/SrCuO2/LaAlO3/SrTiO3 heterostructure. Shubnikov-de Haas oscillations reveal several 2D conduction subbands with carrier effective masses of 0.9me and 2me, quantum mobilities of order 2000 cm2/V s, and band edges only a few millielectronvolts below the Fermi energy. Measurements in tilted magnetic fields confirm the 2D character of the electron gas, and show evidence of inter-subband scattering.
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Research context
OpenAlex topics: Electronic and Structural Properties of Oxides · Magnetic and transport properties of perovskites and related materials · Semiconductor materials and devices
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Radboud University Nijmegen 1 High Field Magnet Laboratory and Institute for Molecules and Materials, , 6525 ED Nijmegen, The Netherlands
University of Twente 2 Faculty of Science and Technology and MESA+ Institute for Nanotechnology, , 7500 AE Enschede, The Netherlands
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