Kq. Ruan et al., HALL-EFFECT STUDIES OF THE MIXED-STATE OF C-AXIS ORIENTED HG0.9TL0.1BA2CA2CU3O8-C-GREATER-THAN-124K(DELTA SUPERCONDUCTING FILMS WITH T), Physica. C, Superconductivity, 282, 1997, pp. 1213-1214
The temperature and the magnetic-field dependences of both the Hall re
sistivity rho(xy) and the longitudinal resistivity rho(xx) in the mixe
d state of c-axis oriented Hg0.9Tl0.1Ba2Ca2Cu3O8+delta superconducting
films with T-c>124K have been measured. It is found that the Hall res
istivity rho(xy) shows a sign anomaly and scales with the longitudinal
resistivity rho(xx) as rho(xy)(T)=K rho(xx)(B)(T) with beta approxima
te to 1.8 and a magnetic-field-independent coefficient K.