Magnetotransport Properties of Epitaxial Films and Hall Bar Devices of the Correlated Layered Ruthenate Sr<sub>3</sub>Ru<sub>2</sub>O<sub>7</sub>

ORAL

Abstract

Layered strontium ruthenates of the Ruddlesden Popper phases, Srn+1RunO3n+1, are an enticing type of material among correlated oxides because they exhibit interesting properties like metamagnetism and nematic behaviors. Only a few attempts have been reported on epitaxial films and devices of Sr3Ru2O7[1]. In this project, we study the magnetotransport properties of epitaxially-grown phase-pure Sr3Ru2O7 films prepared on several oxide substrates by both pulsed laser deposition[2] and molecular beam epitaxy[3].We will present the magnetotransport characteristics of Hall bar devices patterned side-by-side on the same films. Thin-film devices provide an advantage over single crystals because a comparative study could be done for thin-film devices patterned on the same film under similar conditions. By employing X-ray diffraction and STEM, we confirm that the films are phase pure. In the magnetotransport measurements, magnetoresistance values as high as 10% and 140% are achieved in films and devices, respectively. Our results provide an opportunity to explore more the physics of Sr3Ru2O7 devices and in realizing emergent phenomena in correlated strontium ruthenates.

[1] P. B. Marshall et al., Phys. Rev. B 97, 155160 (2018).

[2] Ngabonziza et al., Phys. Rev. Mater. 8, 044401 (2024).

[3] S. Sajeev et al., in preparation (2025).

*We acknowledge Startup funding from Louisiana State University and PARADIM facility funded by the NSF.

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Publication: 1.Ngabonziza et al., Phys. Rev. Mater. 8, 044401 (2024)- Published
2.S. Sajeev et al., in preparation (2025).- Magnetotransport Properties of Epitaxial Films and Hall Bar Devices of the Correlated Layered Ruthenate Sr3Ru2O7 grown by Molecular Beam Epitaxy.

Presenters

  • Sethulakshmi Sajeev

    • Louisiana State University, Baton Rouge
    • Department of Physics and Astronomy, Louisiana State University

Authors

  • Sethulakshmi Sajeev

    • Louisiana State University, Baton Rouge
    • Department of Physics and Astronomy, Louisiana State University

  • Evan Krysko

    • Cornell University
    • Platform for the Accelerated Realization, Analysis, and Discovery of Interface Materials (PARADIM), Cornell University

  • Olivia Peek

    • Platform for the Accelerated Realization, Analysis, and Discovery of Interface Materials (PARADIM), Cornell University

  • Anna Scheid

    • Max Planck Institute for Solid State Research
    • Max Planck Institute for Solid State Research, Germany

  • Arnaud N Tchiomo

    • Louisiana State University, Baton Rouge
    • Department of Physics and Astronomy, Louisiana State University
    • University of Amsterdam

  • Neha Wadehra

    • Cornell University
    • Platform for the Accelerated Realization, Analysis, and Discovery of Interface Materials (PARADIM), Cornell University

  • Matthew R Barone

    • Department of Materials Science and Engineering, Cornell University
    • Platform for the Accelerated Realization, Analysis, and Discovery of Interface Materials (PARADIM), Cornell University

  • Peter A. van Aken

    • Max Planck Institute for Solid State Research
    • Max Planck Institute for Solid State Research, Germany

  • Jochen D Mannhart

    • Max Planck Institute for Solid State Research, Germany

  • Darrell G Schlom

    • Cornell University
    • Platform for the Accelerated Realization, Analysis, and Discovery of Interface Materials (PARADIM), Cornell University

  • Prosper Ngabonziza

    • Louisiana State University
    • Louisiana State University, Baton Rouge
    • Department of Physics and Astronomy, Louisiana State University