Competing quantum spin liquids, gauge fluctuations, and anisotropic interactions in a breathing pyrochlore lattice

Li Ern Chern, Yong Baek Kim, Claudio Castelnovo

We use the projective symmetry group analysis to classify the quantum spin liquids on the $S=1/2$ pyrochlore magnet with a breathing anisotropy. We find 40 ${\mathbb{Z}}_2$ spin liqu…