Transport and thermal properties of single crystal TaNiTe5

Here, we study the thermal and transport properties of topological single crystal TaNiTe5 down to near 0 K and magnetic fields up to 14 T. By analyzing the variation of resistivity rho and Seebeck coefficients S with temperature T, we provide the evidence of electron-electron scattering and electron-phonon scattering in the lower and higher temperature region, respectively. The dependence of S and kappa on magnetic field H is well described by two-band model of conduction vertical bar Delta S/S vertical bar alpha H-n for various temperatures, which also suggests electron and phonon are two kinds of carriers and benefit to the thermal conduction. (C) 2021 Published by Elsevier B.V.