Hall-effect in LuNi_2B_2C in normal and superconducting mixed states
arXiv:cond-mat/9811273 · doi:10.1016/S0038-1098(98)00547-X
Abstract
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} ~ Ï_{xx}^β(Ï_{xx} is the longitudinal resistivity) was found in the mixed state, the value of βbeing dependent on the degree of disorder.
12 pages (REVTeX), 5 EPS figs. Accepted to Solid State Commun