Anisotropic c-f hybridization in the Kondo semiconductor CeFe2Al10

We report a single-crystal study on the Kondo semiconductor CeFe2Al10 in which we measured the magnetic susceptibility, electrical resistivity, thermopower and thermal conductivity. The highly anisotropic behavior in all measurements indicates an anisotropic electronic structure that could originate from a c-f hybridization in an orthorhombic YbFe2Al10-type structure. The anisotropic c-f hybridization effect is manifested in the different peak temperatures of the electrical resistivity and the thermopower along the three principal axes.