Hall Effect in LaCrSb$_3$

Measurements of the Hall effect in LaCrSb$_3$ are reported. LaCrSb$_3$ is a quasi-two-dimensional system, where a-axis is highly resistive while b and c-axes are conducting [1]. Measurements were carried out with the current along the b, and c-axis in the temperature range $4$-$300$K. The anomalous Hall effect dominates at low fields. After the magnetization saturated, we observed a T-dependent deviation from the expected behavior of the ordinary Hall coefficient. The existence of two types of carriers has been suggested by Granado {\it et al.} [2] to explain this deviation. Our data for the current along c suggested that the first type of carriers, which arises from the isotropic Sb plane, is electron-like. The data for the current along b implied that the b-axis conductivity is dominated by hole-like carriers. These hole-like carriers originate from the DE interaction within the Cr chains, which line up along the b-axis, and contribute to the b-axis conductivity mainly at temperatures lower than $T_C$.\\[4pt] [1] D. D. Jackson {\it et al.}, Phys. Rev. B {\bf 65}, 014421 (2001).\\[0pt] [2] E. Granado {\it et al.}, Phys. Rev. Lett. {\bf 89}, 107204 (2002).