Fig. 1: Quantum oscillation of TaP.
From: Quantized thermoelectric Hall effect induces giant power factor in a topological semimetal
a The inversion-symmetry-breaking crystal structure and b the Brillouin zone of TaP, highlighting the locations of the inequivalent Weyl nodes W1 (filled circles) and W2 (empty circles). The Weyl nodes are paired as source “+” (red) and sink “−” (blue) of Berry curvature, separated in momentum space. c Magnetoresistance (MR) as a function of magnetic field at different temperatures from 2.5 K to 300 K. A high (>105%) MR ratio is observed. d The MR measurement configuration (top) and ΔMR as a function of 1/B (bottom). e− and h+ denote electrons and holes, respectively. e The Fourier transform of ΔMR showing a low oscillation frequency \(F_\alpha = 4{\mathrm{T}}\). This is a signature that, in addition to the electron pocket from W1 Weyl node contributing to \(F_\beta = 18{\mathrm{T}}\), we are very close to the W2 Weyl node. f The SdH oscillation and Landau level index plot, from which we obtained an n = 2 Landau level and another n = 0 Landau level. g The schematic bandstructure at finite magnetic fields of our TaP sample.
