Recent observations of negative longitudinal magnetoresistance in semimetal

Xu Xi-Tong¹, Jia Shuang^{1, 2, †,}

Electronic band structure of WSM TaAs and the NLMR (from Ref. [6]). (a) Schematics of the separation of the pairs of Weyl fermions in a WSM in momentum space. (b) The location of the Weyl nodes in the first BZ for TaAs. (c) and (d) The NLMR for two samples with different chemical potentials. The chemical potentials of the samples are illustrated in panel (e).