Cooper Pair Induced Frustration and Nematicity of Two-Dimensional Magnetic Adatom Lattices

ORAL

Abstract

We propose utilizing the Cooper pair to induce magnetic frustration in systems of two-dimensional (2D) magnetic adatom lattices on s-wave superconducting surfaces. The competition between singlet electron correlations and the RKKY coupling is shown to lead to a variety of hidden order states that break the point-group symmetry of the 2D adatom lattice at finite temperature. The phase diagram is constructed using a newly developed effective bond theory [M. Schecter et al., Phys. Rev. Lett. 119, 157202 (2017)], and exhibits broad regions of long-range vestigial nematic order.

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Presenters

  • Jens Paaske

    Niels Bohr Institute, University of Copenhagen, Niels Bohr Inst, Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen

Authors

  • Jens Paaske

    Niels Bohr Institute, University of Copenhagen, Niels Bohr Inst, Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen

  • Michael Schecter

    Department of Physics, University of Maryland

  • Olav Syljuåsen

    Department of Physics, University of Oslo, Physics, University of Oslo