A Theoretical Evaluation of Temperature Dependent Magneto-resistance of High TC Superconductors

Abstract

Using the theoretical formalism of S Hikami et al. and Andrew Magnum, we have theoretically evaluated magneto-resistance in high TC Superconductors. We have evaluated temperature dependent magneto resistance of two superconductors YBCO and LSCO with different concentration n. Our theoretical calculation is performed with the help of two approximations FLEX+CVC and RTA. Our theoretical obtained results indicate that temperature dependent magneto resistance increase and decrease as a function of temperature and concentration n. In both superconductors YBCO and LSCO, the modified Kohler’s rule is well reproduced by FLEX+CVC method.The coefficient 2 0 ( / )cot H takes almost constant value for a wide range of temperature. Our obtained theoretical results show that RTA obtained by the RTA exhibits a strong temperature dependence which is in agreement with Konani’s work.