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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, including non-bulk stable orders 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).

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Presenters

  • Grace Pan

    Department of Physics, Harvard University

Authors

  • Grace Pan

    Department of Physics, Harvard University

  • Qi Song

    Department of Materials Science and Engineering, Cornell University

  • Dan Ferenc Segedin

    Department of Physics, Harvard University

  • Spencer Doyle

    University of California, Berkeley, Department of Physics, Harvard University

  • Harrison LaBollita

    Arizona State University, Physics, Arizona State University, Department of Physics, Arizona State University

  • Hanjong Paik

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

  • Charles Brooks

    Department of Physics, Harvard University

  • Antia Sanchez Botana

    Department of Physics, Arizona State University

  • Julia Mundy

    Department of Physics, Harvard University