Hall-effect in LuNi_2B_2C in normal and superconducting mixed states
  The Hall resistivity rho_{xy} of LuNi_2B_2C is negative in the normal as well as in the mixed state and has no sign reversal typical for high-T_c superconductors. A distinct nonlinearity in the rho_{xy} dependence on field H was found in the normal state for T < 40K, accompanied by a large magnetoresistance reaching +90% for mu_0H=16T at T=20K. The scaling relation rho_{xy} ~ \rho_{xx}^\beta (\rho_{xx} is the longitudinal resistivity) was found in the mixed state, the value of \beta being dependent on the degree of disorder. 
V.N. Narozhnyi, J. Freudenberger, V.N. Kochetkov, K.A. Nenkov, G.   Fuchs, K.-H. M\"uller