Chiral superconductivity with full Bogoliubov Fermi surface in a doped Kagome spin-liquid state.

ORAL

Abstract

We employ a large-scale variational Monte-Carlo simulation to investigate the lightly doped t-J model on the Kagome lattice. We propose several new variational states which smoothly connect to the previously studied uniform 0-flux or U(1) $\pi$-flux states. By comparing the energies of a variety of trail-states at several system-sizes, we find that the state with lowest energy is a chiral superconducting state with full Bogoliubov Fermi surface, which can be analogous to the Fulde-Ferrell-Larkin-Ovchinnikov state. The physical properties of this new state and the experimental consequences of the existence of Bogoliubov Fermi surface in this superconducting state are discussed.

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Presenters

  • Fan Yang

    School of Physics, Beijing Institute of Technology, School of Physics, Beijing Institute of Technology, Beijing, China, Beijing Institute of Technology

Authors

  • Fan Yang

    School of Physics, Beijing Institute of Technology, School of Physics, Beijing Institute of Technology, Beijing, China, Beijing Institute of Technology

  • Yifan Jiang

    Standford University, Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University

  • Hong Yao

    Tsinghua University, Institute for Advanced Study, Tsinghua University