Growth, characterization, and optimization of (110)-oriented YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub> (S) / PrBa<sub>2</sub> (Cu<sub>0.8</sub>Ga<sub>0.2</sub>)<sub>3</sub>O<sub>7</sub> (I) / YBa<sub>2</sub>Cu<sub>3</sub>O (S) trilayer heterostructure.

ORAL

Abstract

Epitaxial growth and characterization of cuprate heterostructures are of the utmost importance for developing many superconductor electronic devices such as Josephson junctions, three-terminal devices, and circuit applications such as interconnects, ground planes, and multichip modules. The heterostructures made with high critical temperature (Tc) superconductor YBa2Cu3O7-x (YBCO) have applications for fundamental science research, such as studies of mechanisms for high-Tc superconductivity, 2D superconductivity, and measurement of the correlation energy. These heterostructures typically have the S/D/S, S/N/S, S/I/S geometries (S=superconductor, D=dielectric, N=normal metal, I=insulator), with the middle layer as the isolation layer, normal metal, or the insulator. Using the pulsed laser-based thin film deposition technique (PLD), we fabricated (110)-oriented YBa2Cu3O7 (YBCO) / PrBa2(Cu0.8Ga0.2)3O7 (PBCGO) bi-layer and YBCO/PBCGO/YBCO tri-layer heterostructures with (110)-oriented PBCGO insulator (I) as thin as ~1nm. Afterward, we performed x-ray diffraction, atomic force microscopy, electrical transport, Raman, and Auger electron spectroscopy measurements on these heterostructures. Here, we present our experimental results from various x-ray measurements, including grazing incident x-ray diffraction, rocking curve measurement, x-ray reflectivity measurement, pole figures, and reciprocal space mapping. We also present electrical transport, Raman scattering, and Auger electron spectroscopy results on the heterostructures.

 

*This work was supported in part by WiSys and UW System Applied Research Grant #102-4-812000-AAH1775 (2019-2021) and UW-Parkside Faculty & Student Summer Research Fellowship 2021.

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Presenters

  • Hom Kandel

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

Authors

  • Hom Kandel

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

  • Nathan Arndt

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

  • Julia A Jones

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

  • Jungwoo Lee

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

  • Yuchuan Yao

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

  • Chang Beom Eom

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

  • Li Zhongrui

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

  • Susmita Roy

    • Physics, University of Colorado, Boulder
    • University of Colorado, Boulder

  • Dmitry Reznik

    • Physics, University of Colorado, Boulder
    • University of Colorado, Boulder