ANISOTROPY OF THE MIXED-STATE RESISTANCE OF TL2BA2CACU2O8 SINGLE-CRYSTALS

The electrical resistance of single crystals of the high-temperature s uperconductor Tl2Ba2CaCu2O8 has been measured as a function of the ang le 8 between the direction of the magnetic field and the current-carry ing CuO2-planes. The resistance is maximal for theta=90 degrees (B per pendicular to CuO2-planes) and decreases to a minimum at theta=0 degre es. For small angles an anomalous enhancement of the resistance is fou nd. While the general shape of the resistance is generated by the moti on of ''pancake vortices'' in the CuO2-planes, the anomaly is due to ' 'Josephson vortices'' moving perpendicular to the planes.