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Updated: May 21, 2026

Growth and Electrostatic/chemical Properties of Metal/LaAlO3/SrTiO3 Heterostructures
Published on: February 8, 2018
Electron transfer and ionic displacements at the origin of the 2D electron gas at the LAO/STO interface: direct
Claudia Cantoni1, Jaume Gazquez, Fabio Miletto Granozio
1Materials Science and Technology Division, Oak Ridge National Laboratory, TN 37831-6116, USA. cantonic@ornl.gov
Abstract:
Using state-of-the-art, aberration-corrected scanning transmission electron microscopy and electron energy loss spectroscopy with atomic-scale spatial resolution, experimental evidence for an intrinsic electronic reconstruction at the LAO/STO interface is shown. Simultaneous measurements of interfacial electron density and system polarization are crucial for establishing the highly debated origin of the 2D electron gas.
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