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Oral: Electronic structure of La<sub>3</sub>Ni<sub>2</sub>O<sub>7</sub> with distinctive layer stacking by ARPES

ORAL

Abstract

Our study investigates the electronic structure of La3Ni2O7, one of the nickelates of interest owing to its newly discovered high-temperature superconductivity. La3Ni2O7 is known to have two alternative – and in some samples coexisting – crystal structures: a bilayer (2222) stacking and an alternating monolayer-trilayer (1313) stacking [1]. Here we examine regions of the crystal consisting of pure 1313 and 2222 phases using angle-resolved photoemission spectroscopy (ARPES), and map their respective band structures. This work provides a comprehensive understanding of the electronic characteristics of the La3Ni2O7 family, and sets the stage for further investigations into its unconventional superconducting properties.



[1] X.L. Chen et al. (2024). Polymorphism in the Ruddlesden–Popper nickelate La3Ni2O7: Discovery of a hidden phase with distinctive layer stacking. Journal of the American Chemical Society, 146(6)

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Presenters

  • Christine Au Yeung

    University of British Columbia

Authors

  • Christine Au Yeung

    University of British Columbia

  • Xinglong Chen

    Argonne National Laboratory

  • Martin Bluschke

    University of British Columbia, Univeristy of British Columbia

  • steef Smit

    University of British Columbia, The University of British Columbia, Univ of Amsterdam

  • Matteo Michiardi

    University of British Columbia

  • Marta Zonno

    Canadian Light Source, Canadian Light Source Inc., University of British Columbia

  • Sergey Zhdanovich

    University of British Columbia

  • Sergey Gorovikov

    Canadian Light Source, Canadian Light Source Inc., University of British Columbia

  • Ilya Elfimov

    University of British Columbia

  • George A Sawatzky

    University of British Columbia

  • John F Mitchell

    Argonne National Laboratory

  • Andrea Damascelli

    University of British Columbia