Nematicity in 3-band Hubbard model of cuprate superconductors

ORAL

Abstract

The recent discovery of intra-unit-cell nematicity in STM studies of cuprate superconductors [1] underscores the importance of the role played by oxygen orbitals in CuO2 plane. Motivated by this observation we study 3-band Hubbard model using exact diagonalization. In particular, we investigate the effects various interaction parameters (Ud, Up, Vpd, Vpp) have on nematicity. Interestingly, we find that Ud, the on-site repulsion at copper sites, enhances nematicity in the strongly coupled regime.\\[4pt] [1] Lawler, M. J. \textit{et al}. Intra-unit-cell electronic nematicity of the high-Tc copper-oxide pseudogap states. \textit{Nature} \textbf{466}, 347 (2010).

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Authors

  • Kyungmin Lee

    • Cornell University

  • Junping Shao

    • Cornell University

  • Richard Scalettar

    • University of California - Davis
    • University of California, Davis

  • Michael Lawler

    • SUNY Binghamton

  • Eun-Ah Kim

    • Cornell University
    • LASSP, Department of Physics, Cornell University
    • Cornell Univ.