Non-saturating large magnetoresistance in semimetals

We investigate magnetotransport properties of semimetals that exhibit non-saturating magnetoresistance (MR). We particularly focus on identifying three characteristic transport quantities to classify the quasi-linear, large MR behavior: (1) the Hall angle, (2) the exponent of field dependence of MR, i.e. H^α and (3) the change of fractional MR as a function of temperature (T). We compare these parameters in four different semimetals – NbP, NbSb₂, TaP, and TaSb₂, and discuss their implications in connection to characteristics of electronic structures as well as the disorder-induced linear MR mechanisms.