Magneto-transport study of top- and back-gated LaAlO${}_3$/SrTiO${}_3$ heterostructures

Abstract

We report a detailed analysis of magneto-transport properties of top- and back-gated LaAlO${}_3$/SrTiO${}_3$ heterostructures. Efficient modulation in magneto-resistance, carrier density, and mobility of the two-dimensional electron liquid present at the interface is achieved by sweeping top and back gate voltages. Analyzing those changes with respect to the carrier density tuning, we observe that the back gate strongly modifies the electron mobility while the top gate mainly varies the carrier density. The evolution of the spin-orbit interaction is also followed as a function of top and back gating.

arXiv comment15 pages, 6 figures

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Cited by in corpus (14)

• Liquid-Gated High Mobility and Quantum Oscillation of the Two-Dimensional Electron Gas at an Oxide Interface
• Dual-Gate Modulation of Carrier Density and Disorder in an Oxide Two-Dimensional Electron System
• Gate-tunable band structure of the LaAlO${}_3$-SrTiO${}_3$ interface
• New insights into the electron trapping mechanism in LaAlO_3 / SrTiO3 heterostructures
• Field Effect Transistors with Sub-Micrometer Gate Lengths Fabricated from LaAlO${}_3$-SrTiO${}_3$-Based Heterostructures
• Gate-tunable Rashba spin-orbit coupling and spin polarization at diluted oxide interfaces
• Tuning Rashba spin-orbit coupling at LaAlO3/SrTiO3 interfaces by band filling
• SrTiO${}_3$ termination control: A method to tailor the oxygen exchange kinetics
• Quantum paraelectricity probed by superconducting resonators
• Electron trapping and detrapping in an oxide two-dimensional electron gas: The role of ferroelastic twin walls
• Gate-tunable superconductivity at SrTiO3 surface realized by Al layer evaporation
• Kondo effect with tunable spin orbit interaction in LaTiO3/CeTiO3/SrTiO3 heterostructure
• Anti-Localization in Oxides: Effective Spin-3/2 Model
• Coupling between tilts and charge carriers at polar-nonpolar perovskite interfaces