Probing the electronic ground states of thin film Ruddlesden-Popper (<i>R</i><sub>n+1</sub>Ni<sub>n</sub>O<sub>3n+1</sub>) nickelates

ORAL

Abstract

The recent discovery of superconductivity in a hole-doped infinite layer nickelate has spurred the reexamination of how nickelate physics may be amenable to stabilizing new superconducting phases [1]. The nickelate identified is isostructural to the superconducting cuprates and lies squarely in the superconducting regime of the simple phase diagram by Zhang [2] but disentangling the electronic from the structural contributions presents a key challenge. We have stabilized, for the first time, the Ruddlesden-Popper nickelates (Ndn+1NinO3n+1) in thin film form up to n = 6. We will discuss how tuning of the Ruddlesden-Popper order alters the electronic ground states of the system including the nickel 3d occupancy and effects on the canonical metal-to-insulator transition.

[1] D. Li et al., Nature 572, 624-627 (2019).
[2] J. Zhang et al., Nature Physics 13, 964-869 (2017).

*This work is supported by the National Science Foundation (Platform for the Accelerated Realization, Analysis, and Discovery of Interface Materials (PARADIM)) under Cooperative Agreement No. DMR-1539918.

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Presenters

  • Grace Pan

    • Harvard University

Authors

  • Grace Pan

    • Harvard University

  • Qi Song

    • Harvard University

  • Charles Brooks

    • Kavli Institute at Cornell for Nanoscale Science, Ithaca, New York 14853, USA
    • Harvard University

  • Spencer Doyle

    • physics, University of California, Berkeley
    • Physics, Harvard University
    • University of California, Berkeley
    • Harvard University

  • James Ehrets

    • Harvard University

  • Dan Ferenc Segedin

    • Harvard University

  • Hanjong Paik

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

  • Julia Mundy

    • School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA
    • Harvard University