HALL RESISTIVITY OF TYPE-II SUPERCONDUCTORS IN THE RENORMALIZED REGIME

Hall resistivity in high temperature superconductors is investigated t heoretically by taking account of the renormalized order parameter flu ctuation. The results reproduce the characteristics of the Hall resist ivity data including the sign change when the sign of the energy deriv ative of the density of states is positive for the hole-type normal st ate Hall resistivity. This implies that the existence of the renormali zed regime below the mean field critical temperature is essential to e xplain the characteristics of the Hall resistivity like other thermody namic quantities in the fluctuation region. (C) 1997 Elsevier Science B.V.