Controlled Electronic and Magnetic Landscape in Self‐Assembled Complex Oxide 
Heterostructures

Park, Dae‐Sung; Rata, Aurora Diana; Dahm, Rasmus Tindal; Chu, Kanghyun; Gan, Yulin; Maznichenko, Igor; Ostanin, Sergey; Trier, Felix; Baik, Hionsuck; Choi, Woo Seok; Choi, Chel‐Jong; Kim, Young Heon; Rees, Gregory Jon; Gíslason, Hafliði Pétur; Buczek, Paweł Adam; Mertig, Ingrid; Ionescu, Mihai Adrian; Ernst, Arthur; Dörr, Kathrin; Muralt, Paul; Pryds, Nini

doi:10.1002/adma.202300200

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Controlled Electronic and Magnetic Landscape in Self‐Assembled Complex Oxide Heterostructures

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Ernst, Arthur
Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society;

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https://doi.org/10.1002/adma.202300200
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Citation

Park, D., Rata, A. D., Dahm, R. T., Chu, K., Gan, Y., Maznichenko, I., et al. (2023). Controlled Electronic and Magnetic Landscape in Self‐Assembled Complex Oxide Heterostructures. Advanced Materials, 35(32): 2300200. doi:10.1002/adma.202300200.

Cite as: https://hdl.handle.net/21.11116/0000-000D-8C93-F

Abstract

Complex oxide heterointerfaces contain a rich playground of novel physical properties and functionalities, which give rise to emerging technologies. Among designing and controlling the functional properties of complex oxide film heterostructures, vertically aligned nanostructure (VAN) films using a self-assembling bottom-up deposition method presents great promise in terms of structural flexibility and property tunability. Here, the bottom-up self-assembly is extended to a new approach using a mixture containing a 2Dlayer-by-layer film growth, followed by a 3D VAN film growth. In this work, the two-phase nanocomposite thin films are based on LaAlO₃:LaBO₃, grown on a lattice-mismatched SrTiO₃₀₀₁ (001) single crystal. The 2D-to-3D transient structural assembly is primarily controlled by the composition ratio, leading to the coexistence of multiple interfacial properties, 2D electron gas, and magnetic anisotropy. This approach provides multidimensional film heterostructures which enrich the emergent phenomena for multifunctional applications.