Extended Kohler's rule of magnetoresistance in TaCo2Te2

${\mathrm{TaCo}}_{2}{\mathrm{Te}}_{2}$ is recently reported to be an air-stable, high mobility van der Waals material with probable magnetic order. Here we investigate the scaling behavior of its magnetoresistance. We measured both the longitudinal (${\ensuremath{\rho}}_{xx}$) and Hall (${\ensuremath{\rho}}_{xy}$) magnetoresistivities of ${\mathrm{TaCo}}_{2}{\mathrm{Te}}_{2}$ crystals in magnetic fields parallel to the $c$ axis and found that the magnetoresistance violates the Kohler's rule $\mathrm{MR}\ensuremath{\sim}f[H/{\ensuremath{\rho}}_{0}]$ while obeying the extended Kohler's rule $\mathrm{MR}\ensuremath{\sim}f[H/({n}_{T}{\ensuremath{\rho}}_{0})]$, where $\mathrm{MR}\ensuremath{\sim}[{\ensuremath{\rho}}_{xx}(H)\ensuremath{-}{\ensuremath{\rho}}_{0}]/{\ensuremath{\rho}}_{0}$, $H$ is the magnetic field, ${n}_{\mathrm{T}}$ is a thermal factor, and ${\ensuremath{\rho}}_{xx}(H)$ and ${\ensuremath{\rho}}_{0}$ are the resistivities at $H$ and zero field, respectively. While deviating from those of the densities of electrons (${n}_{\mathrm{e}}$) and holes (${n}_{\mathrm{h}}$) obtained from the two-band model analysis of the magnetoconductivities, the temperature dependence of ${n}_{\mathrm{T}}$ is close to that of the Hall carrier densities ${n}_{\mathrm{H}}$ calculated from the slopes of ${\ensuremath{\rho}}_{xy}(H)$ curves at low magnetic fields, providing a different way to obtain the thermal factor in the extended Kohler's rule.