We investigate the temperature dependence of the intrinsic charge and spin transport
in two-dimensional semiconductors with Rashba spin-orbit coupling. For 2akF 2ma2/h2 << w <<
2akF 2ma2/h2 ( where a is the Rashba spin-orbit coupling parameter), the real part of the optical
conductivity sR and the imaginary part of the spin Hall conductivity shI decrease with
temperature monotonically. Outside this frequency range sR and shI exhibit resonant
behavior. At high frequencies, sR and shI change sign at a characteristic temperature T1. Our result
suggests that the sign and magnitude of sR and shI can be tuned by changing the temperature.