Detection of novel quantum states in honeycomb YbBr3

Quantum magnetism, a central aspect of condensed matter physics, is gaining importance in low-dimensional materials, especially two-dimensional systems with strong quantum fluctuations. In this study, we explore novel quantum states in YbBr3, a two-dimensional frustrated honeycomb compound. Previous research suggests a quantum spin liquid ground state with plaquette fluctuations in YbBr3, warranting further investigation of its complex magnetic interactions. Using inelastic neutron scattering, we plan to examine YbBr3 single crystals at 0.6 K under magnetic fields of 0 T, 3 T, and 7 T. These measurements enable analysis of magnon dispersion and the effect of magnetic fields on a potential plaquette valence bond state or other quantum states. Our study will enrich the understanding of quantum phase transitions and magnetism in low-dimensional materials.