Vortex types and their phase diagram in Tl2Ba2CuO6 single crystals

Precision flux flow resistivity ρ(θ) measurements were carried out as a function of the angle θ between the applied magnetic field H and the-c-axis on good quality over-doped Tl2Ba2CuO6 single crystals. The ρ(θ) data exhibit a significant drop, a dip and a peak as θ approaches 90°. We attributed them to the vortex transitions of different types and the new θ–T and θ–H phase diagrams were identified, where T is the temperature.