Growth and optimization of structural properties of (110)-oriented YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub> (YBCO) / PrBa<sub>2</sub>(Cu<sub>0.8</sub>Ga<sub>0.2</sub>)<sub>3</sub>O<sub>7</sub> (PBCGO) heterostructure

POSTER

Abstract

Epitaxial growth and characterization of heterostructures made of high-temperature superconductor YBCO and cuprate insulator PBCGO are critical for developing many superconductor electronic devices including Josephson junctions, three-terminal devices, multichip modules, and other circuit applications. Of particular interest is the Josephson junction device with applications ranging from magnetometer sensors, quantum computing, radio telescopes, and national defense. These heterostructures are also important for fundamental science research, such as studies of mechanisms for high-TC and 2D superconductivity, and measurement of correlation energy.

Using the pulsed laser-based thin film deposition technique, we fabricated (110)-oriented YBa2Cu3O7-x / PrBa2(Cu0.8Ga0.2)3O7 heterostructure and performed x-ray diffraction (XRD), atomic force microscopy (AFM), and Auger electron spectroscopy measurements to optimize its structural properties for the nanofabrication of Josephson junctions. Here, we present our experimental results of AFM and various x-ray measurements including theta-2 theta XRD patterns, rocking curve, x-ray reflectivity, pole figures, and reciprocal space mapping measurements. We also present our theoretical studies on the electronic structure of the heterostructure.

*This research is supported by WiSys / UW System Applied Research Grant Award no. 1024-812000AAH177 (2019-20).

Presenters

  • Julia A Jones

    • Applied Physics Laboratory, University of Wisconsin-Parkside
    • Applied Physics Laboratory, University of Wisconsin - Parkside

Authors

  • Julia A Jones

    • Applied Physics Laboratory, University of Wisconsin-Parkside
    • Applied Physics Laboratory, University of Wisconsin - Parkside

  • Hom Kandel

    • Applied Physics Laboratory, University of Wisconsin-Parkside
    • Applied Physics Laboratory, University of Wisconsin - Parkside

  • Chang-Beom Eom

    • University of Wisconsin - Madison
    • Oxide Laboratory, University of Wisconsin - Madison

  • Yuchuan Yao

    • Materials Science and Engineering, University of Wisconsin-Madison
    • Oxide Laboratory, University of Wisconsin - Madison
    • University of Wisconsin - Madison

  • Nathan Arndt

    • Materials Science and Engineering, University of Florida
    • Applied Physics Laboratory, University of Wisconsin - Parkside

  • Li Zhongrui

    • University of Michigan-Ann Arbor
    • Electron Microbeam Analysis Laboratory, University of Michigan

  • Jungwoo Lee

    • Oxide Laboratory, University of Wisconsin - Madison