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Over the last few years, significant attention has been devoted to studyingthe kagome materials AV$_3$Sb$_5$ (A = K, Rb, Cs) due to their unconventionalsuperconductivity and charge density wave (CDW) ordering. RecentlyScV$_6$Sn$_6$ was found to host a CDW below $\approx$90K, and, likeAV$_3$Sb$_5$, it contains a kagome lattice comprised only of V ions. Here wepresent a comprehensive magnetotransport study on ScV$_6$Sn$_6$. We discoveredseveral anomalous transport phenomena above the CDW ordering temperature,including insulating behavior in interlayer resistivity, a stronglytemperature-dependent Hall coefficient, and violation of Kohler's rule. Allthese anomalies can be consistently explained by a progressive decrease incarrier densities with decreasing temperature, suggesting the formation of apseudogap. Our findings suggest that high-temperature CDW fluctuations play asignificant role in determining the normal state electronic properties ofScV$_6$Sn$_6$.

Pseudogap behavior in charge density wave kagome material ScV$_6$Sn$_6$ revealed by magnetotransport measurements