journal article·2012-08-02Open access

Electron Transfer and Ionic Displacements at the Origin of the 2D Electron Gas at the LAO/STO Interface: Direct Measurements with Atomic‐Column Spatial Resolution

Claudia Cantoni, Jaume Gazquez, Fabio Miletto Granozio, Mark P. Oxley, Maria Varela, Andrew R. Lupini, Stephen J. Pennycook, Carmela Aruta, Umberto Scotti di Uccio, Paolo Perna, Davide Maccariello

Advanced Materials· Volume 24· Issue 29

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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Research context

OpenAlex topics: Electronic and Structural Properties of Oxides · Semiconductor materials and devices · Magnetic and transport properties of perovskites and related materials

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