High field magneto-transport in two-dimensional electron gas LaAlO3/SrTiO3

The transport properties of the complex oxide LaAlO3/SrTiO3 interface are investigated under a high magnetic field (55 T). Small oscillations of the magnetoresistance with altered periodicity are observed when plotted versus the inverse magnetic field. We attribute this effect to Rashba spin-orbit c...

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Bibliographic Details
Published in:Applied physics letters 2016-09, Vol.109 (12)
Main Authors: Yang, Ming, Han, Kun, Torresin, Olivier, Pierre, Mathieu, Zeng, Shengwei, Huang, Zhen, Venkatesan, T. V., Goiran, Michel, Coey, J. M. D., Ariando, Escoffier, Walter
Format: Article
Language:English
Subjects:
Applied physics
Carrier density
Condensed Matter
Electron gas
Hall effect
Magnetic fields
Magnetic properties
Magnetism
Magnetoresistance
Magnetoresistivity
Periodic variations
Physics
Spin-orbit interactions
Strontium titanates
Superconductivity
Transport properties
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Summary:The transport properties of the complex oxide LaAlO3/SrTiO3 interface are investigated under a high magnetic field (55 T). Small oscillations of the magnetoresistance with altered periodicity are observed when plotted versus the inverse magnetic field. We attribute this effect to Rashba spin-orbit coupling which remains consistent with large negative magnetoresistance when the field is parallel to the sample plane. A large inconsistency between the carrier density extracted from Shubnikov-de Haas analysis and from the Hall effect is explained by the contribution to transport of at least two bands with different mobilities.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4963234