Extended Kohler’s Rule of Magnetoresistance in TaCo<sub>2</sub>Te<sub>2</sub>
ORAL
Abstract
TaCo2Te2 is recently reported to be an air-stable, high mobility Van der Waals material with probable magnetic order [1]. Here we investigate the scaling behavior of its magnetoresistance. We measured both the longitudinal and Hall magnetoresistivities of TaCo2Te2 crystals in magnetic fields parallel to the c-axis and found that the magnetoresistance violates the Kohler’s rule MR = f[H/ρ0] while obeying the extended Kohler’s rule MR = f[H/(nTρ0)] [2], where MR = [ρxx(H)-ρ0]/ρ0 with ρxx and ρ0 being the longitudinal resistivities at a fixed temperature with and without the presence of a magnetic field H, respectively. nT is a thermal factor governed by the temperature dependence of the carrier density, which can be experimentally determined from the Hall magnetoresistivities ρxy(H) obtained at various temperatures.
[1] R. Singha et al., TaCo2Te2: An Air-Stable, High Mobility Van der Waals Material with Probable Magnetic Order. Adv. Funct. Mater. 32, 2108920 (2022).
[2] J. Xu et al., Extended Kohler's Rule of Magnetoresistance. Physical Review X 11, 041029 (2021).
[1] R. Singha et al., TaCo2Te2: An Air-Stable, High Mobility Van der Waals Material with Probable Magnetic Order. Adv. Funct. Mater. 32, 2108920 (2022).
[2] J. Xu et al., Extended Kohler's Rule of Magnetoresistance. Physical Review X 11, 041029 (2021).
*This work was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering. Work performed at the Center for Nanoscale Materials, a U.S. Department of Energy Office of Science User Facility, was supported by the U.S. DOE, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357.
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Presenters
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Samuel E Pate
- Northern Illinois University