Mean-Field Nematic Phase Diagram for the Three-Band Hubbard Model

ORAL

Abstract

We map out the phase diagram of the three-band Hubbard model of a CuO$_2$ plane for nematic order in the parameter space of various on-site and nearest-neighbor interactions. For this, we define an intra-unit cell nematic order parameter in terms of a charge imbalance between the two oxygen sites in the unit cell and employ a self-consistent mean-field analysis. This study is motivated by recent STM experiments on high-T$_c$ cuprate superconductors pointing towards intra-unit cell nematicity.

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Authors

  • Mark H. Fischer

    LASSP, Department of Physics, Cornell University

  • Michael J. Lawler

    Department of Physics, Applied Physics and Astronomy, Binghamton University, Binghamton Univ., Binghamton University, Cornell University

  • Eun-Ah Kim

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