NORMAL-STATE MAGNETORESISTANCE IN STABLE MAGNETIC-FIELDS UP TO 20 T IN SINGLE-CRYSTALLINE LA1.76SR0.24CUO4

The in-plane normal state resistance R-n(T, H) in an overdoped La2-xSr xCuO4 crystal (x = 0.24) has been measured in magnetic fields up to 20 T parallel to the c-axis. The R,(T) curves in constant fields show a quadratic behavior in a wide range of temperature above T-c(H). Some c haracteristic features in R-n(H) are observed. In the low-field region R-n(H) increases with increasing H, reaches a maximum and then decrea ses with further increasing H. Possible origins for the observed unusu al R-n(T, H) behavior are discussed. (C) 1998 Published by Elsevier Sc ience B.V.