UNIVERSAL HALL-MOBILITY IN C-AXIS-ORIENTED Y0.5CA0.5BA2CU3O7-DELTA THIN-FILMS

Transport properties of c-axis-oriented Y1-xCaxBa2Cu3O7-delta thin fil ms with a wide range of x = 0-0.5 and delta = 0.08-1.0 have been syste matically investigated. Hall mobility mu(H) in all the films satisfies the relation of mu(H)(-1) = aT(2) + C (alpha and C are constants). By changing x and delta, we have successfully excluded the contribution of Cu-O chains in mu(H)(-1), and shown that alpha is essentially indep endent of doping level and disorder. Moreover, the doping-independent alpha is universal in various high-T-c superconducting cupratres, and this indicates that mu(H)(-1) is more fundamental than R(ab)(H).