  High precision measurements of Hall RH(T) and Seebeck S(T) coefficients have
been carried out for the first time on single crystals of rare earth
dodecaborides RB12 (R - Ho, Er, Tm, Lu) at temperatures 1.8 - 300K. Low
temperature anomalies associated with antiferromagnetic phase transitions in
HoB12, ErB12 and TmB12 compounds have been detected on the temperature
dependencies of RH(T) and S(T). The estimated values of charge carriers
mobility allowed us to conclude about the appreciable influence of spin
fluctuations on the charge transport in these compounds with B12 atomic
clusters.
