Low temperature magneto-transport properties of encapsulated WTe₂ flakes

We report low temperature electronic transport measurements of encapsulated semimetallic WTe₂ flakes with different thickness. Magnetoresistance and Hall measurements reveal two-carrier behavior in all samples, which is consistent with band structure calculations. However, thicker sample shows a much larger charge imbalance between electron and hole concentrations than thinner one where the electron and hole are almost balanced down to 20 mK. Furthermore, angle dependence of R_xx reveals strong anisotropy in samples with different thickness.