Abstract
The isotropic and anisotropic components of the transport scattering rate in overdoped Tl 2 Ba 2 CuO 6 + δ are determined for a range of T c values between 15 and 35 K by angle-dependent magnetoresistance measurements at T = 40 K . The anisotropic scattering term is found to scale linearly with T c and appears to vanish at the point where superconductivity is destroyed, establishing a clear link between the superconducting and normal state physics. Comparison with results from angle resolved photoemission spectroscopy suggests that the transport and quasi-particle lifetimes are very different.
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