Spin liquids are quantum phases of matter that exhibit a variety of novel features associated with their topological character. These include various forms of fractionalization - elementary excitations that behave as fractions of an electron. While there is not yet entirely convincing experimental evidence that any particular material has a spin liquid ground state, in the past few years, increasing evidence has accumulated for a number of materials suggesting that they have characteristics strongly reminiscent of those expected for a quantum spin liquid.
@article{arxiv.1905.07040,
title = {Quantum Spin Liquids},
author = {C. Broholm and R. J. Cava and S. A. Kivelson and D. G. Nocera and M. R. Norman and T. Senthil},
journal= {arXiv preprint arXiv:1905.07040},
year = {2020}
}