Analysis of Dirac and Weyl points in topological semimetals via oscillation effects
G. P. Mikitik and Yu. V. Sharlai
B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of UkraineKharkiv 61103, Ukraine
Received January 4, 2021, published online February 26, 2021
We calculate the extremal cross-sectional areas and cyclotron masses for the Fermi-surface pockets in Dirac and Weyl topological semimetals. The calculation is carried out for the most general form of the electron energy bands in the vicinity of the Weyl and Dirac points. Using the obtained formulas, one can find parameters characterizing the Dirac and Weyl electrons in the topological semimetals from appropriate experimental data. As an example, we consider the W1 electrons in TaAs.
Key words: topological semimetals, Weyl point, Dirac point, TaAs, oscillation effects in Weyl semimetals.