journal article·2019-12-01Open access

Growth of PdCoO2 by ozone-assisted molecular-beam epitaxy

Jiaxin Sun, Matthew R. Barone, Celesta S. Chang, Megan E. Holtz, Hanjong Paik, Jürgen Schubert, David A. Muller, Darrell G. Schlom

APL Materials· Volume 7· Issue 12

Abstract

We report the in situ, direct epitaxial synthesis of (0001)-oriented PdCoO2 thin films on c-plane sapphire using ozone-assisted molecular-beam epitaxy. The resulting films have smoothness, structural perfection, and electrical characteristics that rival the best in situ grown PdCoO2 thin films in the literature. Metallic conductivity is observed in PdCoO2 films as thin as ∼2.0 nm. The PdCoO2 films contain 180° in-plane rotation twins. Scanning transmission electron microscopy reveals that the growth of PdCoO2 on the (0001) surface of Al2O3 begins with the CoO2 layer.
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Research context

OpenAlex topics: Copper-based nanomaterials and applications · ZnO doping and properties · Electronic and Structural Properties of Oxides

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Materials Sciences and Engineering, Cornell University 1 , Ithaca, New York 14853, USA

Department of Physics, Cornell University 2 , Ithaca, New York 14853, USA

Platform for the Accelerated Realization, Analysis, and Discovery of Interface Materials (PARADIM), Cornell University 3 , Ithaca, New York 14853, USA

Peter Grünberg Institute (PGI-9) and JARA-Fundamentals of Future Information Technology, Forschungszentrum Jülich GmbH 4 , 52425 Jülich, Germany

School of Applied and Engineering Physics, Cornell University 5 , Ithaca, New York 14853, USA

Kavli Institute at Cornell for Nanoscale Science 6 , Ithaca, New York 14853, USA

Funding

National Science Foundation · U.S. Department of Energy

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