Electronic structure of compressively strained bilayer nickelate

ORAL

Abstract

Since the initial discovery of superconductivity in the Ruddlesden-Popper phases of bulk nickelates under high pressure, a major topic of discussion has been the identity of the key superconducting bands. The recent stabilization of superconductivity at ambient pressure in compressively strained bilayer nickelate thin films has now enabled detailed electronic structure characterization. In this talk, I will present our oxide MBE synthesis of compressively strained (La,Pr)3Ni2O7 thin films, stabilized through a combination of isovalent Pr substitution and growth optimization. I will also report on their electronic structure characterized via in situ ARPES, with an emphasis on thickness, oxidation treatment, and photon energy dependence.

*This work was supported by the US Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division, under contract DE-AC02-76SF00515. The work at Advanced Light Source, Lawrence Berkeley National Laboratory, was supported by US DOE under contract DE-AC02-05CH11231.

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Presenters

  • Bai Yang Wang

    • SLAC National Accelerator Laboratory
    • Stanford University

Authors

  • Bai Yang Wang

    • SLAC National Accelerator Laboratory
    • Stanford University

  • Sebastien N Abadi

    • Stanford University

  • Yidi Liu

    • Stanford University

  • Yong Zhong

    • Stanford University

  • Yijun Yu

    • Stanford University

  • Xiaoliang Zhang

    • University of Florida

  • Yi-Ming Wu

    • Stanford Institute for Theoretical Physics

  • Ruohan Wang

    • Stanford University

  • Jiarui Li

    • Stanford University

  • Yaoju Tarn

    • Stanford University

  • Eun Kyo Ko

    • Stanford University

  • Vivek Thampy

    • SLAC National Accelerator Laboratory

  • Chun Lin

    • SLAC National Accelerator Laboratory

  • Makoto Hashimoto

    • SLAC National Accelerator Laboratory

  • Donghui Lu

    • SLAC National Accelerator Laboratory

  • Young Sang Lee

    • Stanford University

  • Thomas P Devereaux

    • Stanford University

  • Chunjing Jia

    • University of Florida

  • Harold Y Hwang

    • Stanford University

  • Zhi-Xun Shen

    • Stanford University