Correlations betweenTc andns/m* (carrier density/ effective mass) in high-Tc and organic superconductors

We update our muon spin relaxation studies of the magnetic field penetration depth which show the correlations betweenTc and the relaxation rate σ αns/m* (carrier density/effective mass) of hole-doped high-Tc cuprate superconductors (La2, Sr3)CuO4, YBa2Cu3O7 (Y1−xPrx)Ba2Cu3O7, and other double and triple layer systems. These studies are extended to the organic superconductor (BEDT-TTF)2Cu(NCS)2.