Discontinuous Hall coefficient at the quantum critical point in YbRh<sub>2</sub>Si<sub>2</sub>
Discontinuous Hall coefficient at the quantum critical point in YbRh<sub>2</sub>Si<sub>2</sub>
YbRh2Si2 is a model system for quantum criticality. Particularly, Hall effect measurements helped identify the unconventional nature of its quantum critical point. Here, we present a high-resolution study of the Hall effect and magnetoresistivity on samples of different quality. We find a robust crossover on top of a sample dependent …