Atomic-scale tuning of the charge distribution by strain engineering in oxide heterostructures

Research report (imported) 2021 - Max Planck Institute for Solid State Research

Authors

Wu, Yu-Mi; Suyolcu, Y. Eren; Kim, Gideok; Christiani, Georg; Wang, Yang; Keimer, Bernhard; Logvenov, Gennady; van Aken, Peter A.

Departments

Wissenschaftliche Einrichtung "Stuttgarter Zentrum für Elektronenmikroskopie", Wissenschaftliche Einrichtung "Dünnschichttechnologie", Abteilung "Festkörper-Spektroskopie"

Summary

Mechanical strain can be used to selectively modify physical properties in oxide heterostructures. For this purpose, we embedded La_0.5Sr_0.5MnO₃ (LSMO) layers between La₂CuO₄ (LCO) layers and deposited them on different substrates. This allowed us to tune systematically the mechanical strain within the LSMO layers. Within the layers, we determine the charge distribution atomically resolved by electron energy-loss spectroscopy (EELS) and correlate it with measurements of conductivity as well as magnetic properties.

For the full text, see the German version.