• Editors' Suggestion

Synthesis and electronic properties of epitaxial SrNiO3/SrTiO3 superlattices

Le Wang, Jiali Zhao, Cheng-Tai Kuo, Bethany E. Matthews, Marjolein T. Oostrom, Steven R. Spurgeon, Zhenzhong Yang, Mark E. Bowden, Linda W. Wangoh, Sang-Jun Lee, Jun-Sik Lee, Er-Jia Guo, Jiaou Wang, Scott A. Chambers, and Yingge Du
Phys. Rev. Materials 6, 075006 – Published 20 July 2022
PDFHTMLExport Citation

Abstract

We report the deposition and characterization of a set of high-quality (SrNiO3)1/(SrTiO3)n superlattices using oxide molecular beam epitaxy. We demonstrate that one unit cell of SrNiO3 can be stabilized as a perovskite in these structures and that there is no charge transfer across the heterointerface. Detailed spectroscopy data analysis indicates that holes are confined to the SrNiO3 unit cells, resulting in a Ni valence between 3 and 4. Hole hopping conductivity is observed in the n=1 superlattice but is strongly suppressed along the c-axis direction for n=3 and 5, resulting in the insulating behavior in the latter. Our study will inspire the epitaxial synthesis of (SrNiO3)1/(RNiO3)n superlattices, as measurements of their properties could open a platform for studying nickelate-based superconductors.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 13 April 2022
  • Accepted 27 June 2022

DOI:https://doi.org/10.1103/PhysRevMaterials.6.075006

©2022 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Le Wang1,*, Jiali Zhao2,3, Cheng-Tai Kuo4, Bethany E. Matthews5, Marjolein T. Oostrom6, Steven R. Spurgeon5,7, Zhenzhong Yang1, Mark E. Bowden8, Linda W. Wangoh1, Sang-Jun Lee4, Jun-Sik Lee4, Er-Jia Guo3, Jiaou Wang2, Scott A. Chambers1, and Yingge Du1,†

  • 1Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354, USA
  • 2Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100039 China
  • 3Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 4Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
  • 5Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, USA
  • 6National Security Directorate, Pacific Northwest National Laboratory, Richland, Washington 99352, USA
  • 7Department of Physics, University of Washington, Seattle, Washington 98195, USA
  • 8Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352, USA

  • *le.wang@pnnl.gov
  • yingge.du@pnnl.gov

Article Text (Subscription Required)

Click to Expand

Supplemental Material (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 6, Iss. 7 — July 2022

Reuse & Permissions
Access Options
CHORUS

Article Available via CHORUS

Download Accepted Manuscript
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Materials

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×