Frustrated magnetic systems exhibit many fascinating phases. Prime among them are quantum spin liquids, where the magnetic moments do not order even at zero temperature. A subclass of quantum spin liquids called Kitaev spin liquids are particularly interesting, because they are exactly solvable, can be realized in certain materials, and show a large variety of gapless and gapped phases. Here, we show that non-symmorphic symmetries can enrich spin liquid phases, such that the low-energy spinon degrees of freedom form three-dimensional Dirac cones or nodal chains. In addition, we suggest how such Kitaev spin liquids may be realized in metal-organic-frameworks.
@article{arxiv.1707.00898,
title = {Crystalline Kitaev spin liquids},
author = {Masahiko G. Yamada and Vatsal Dwivedi and Maria Hermanns},
journal= {arXiv preprint arXiv:1707.00898},
year = {2017}
}