Theory of partial quantum disorder in the stuffed honeycomb Heisenberg antiferromagnet

  title={Theory of partial quantum disorder in the stuffed honeycomb Heisenberg antiferromagnet},
  author={Urban F. P. Seifert and Matthias Vojta},
  journal={Physical Review B},
Recent numerical results [Gonzalez $\textit{et al.}$, Phys. Rev. Lett. $\textbf{122}$, 017201 (2019); Shimada $\textit{et al.}$, J. Phys. Conf. Ser. $\textbf{969}$, 012126 (2018)] point to the existence of a partial-disorder ground state for a spin-1/2 antiferromagnet on the stuffed honeycomb lattice, with 2/3 of the local moments ordering in an antiferromagnetic N\'eel pattern, while the remaining 1/3 of the sites display short-range correlations only, akin to a quantum spin liquid. We derive… 

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