Oral: Electronic structure of La3Ni2O7 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