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American Institute of Physics, Applied Physics Letters, 1(105), p. 011603

DOI: 10.1063/1.4887235

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Tunable bilayer two-dimensional electron gas in LaAlO3/SrTiO3 superlattices

Journal article published in 2014 by H. J. Harsan Ma ORCID, Z. Huang ORCID, W. M. Lü, A. Annadi, S. W. Zeng, L. M. Wong, S. J. Wang, T. Venkatesan, Ariando
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

We report magnetotransport properties of double heterointerfaces in LaAlO3/SrTiO3/LaAlO3/SrTiO3(001) (LAO/STO/LAO/STO). A strong nonlinearity in the Hall resistivity is found when the temperature is below 80 K. This effect is attributed to multichannel conduction of interfacial charges generated in double heterostructures of LAO/STO where two-dimensional electron gas (2DEG) is produced. The multichannel conduction is confirmed by back gating modulation of Hall effect. Our result suggests the possibility to achieve coupled bilayer 2DEG layers in LAO/STO superlattices.