• DOI:10.1038/s41535-021-00363-0
• Corpus ID: 221090036

Precursor of pair-density wave in doping Kitaev spin liquid on the honeycomb lattice

@article{Peng2020PrecursorOP,
  title={Precursor of pair-density wave in doping Kitaev spin liquid on the honeycomb lattice},
  author={Cheng Peng and Yi-Fan Jiang and Thomas P. Devereaux and Hong-Chen Jiang},
  journal={npj Quantum Materials},
  year={2020},
  volume={6},
  pages={1-6}
}

• C. Peng, Yi-Fan Jiang, +1 author Hong-Chen Jiang
• Published 10 August 2020
• Physics
• npj Quantum Materials

We study the effects of doping the Kitaev model on the honeycomb lattice where the spins interact via the bond-directional interaction J K , which is known to have a quantum spin liquid as its exact ground state. The effect of hole doping is studied within the t - J K model on a three-leg cylinder using density-matrix renormalization group. Upon light doping, we find that the ground state of the system has a dominant quasi-long-range charge-density-wave correlations but short-range single-particle correlations. In the pairing channel, the even-parity superconducting correlation is dominant with d -wave-like symmetry, which oscillates in sign as a function of separation with a period equal to that of the spin-density wave and two times the charge-density wave. Although these correlations fall rapidly (possibly exponentially) at long distances, this is never-the-less the example where a pair-density wave is the leading instability in the pairing channel on the honeycomb lattice.