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High resolution laser-based angle-resolved photoemission measurements are carried out on Bi2Sr2CuO6+7δ super-conductor covering a wide doping range from heavily underdoped to heavily overdoped samples. Two obvious energy scales are identified in the nodal dispersions: one is the well-known 50-80 meV high energy kink and the other is <10meV low energy kink. The high energy kink increases monotonously in its energy scale with increasing doping and shows weak temperature dependence, while the low energy kink exhibits a non-monotonic doping dependence with its coupling strength enhanced sharply below TC. These systematic investigations on the doping and temperature dependence of these two energy scales favor electron-phonon interactions as their origin. They point to the importance in involving the electron-phonon coupling in understanding the physical properties and the superconductivity mechanism of high temperature cuprate superconductors. [ABSTRACT FROM AUTHOR]

High quality Pb-doped Bi2Sr2CuO6+d (Pb-Bi2201) single crystals are grown by the traveling solvent floating zone technique, with dimensions as large as [?] 50 mmx [?] 5.0 mmx [?] 2 mm. The Pb-Bi2201 single crystals with different doping levels are obtained by the annealing process which covers a wide doping range of the overdoped region. We describe in detail the growth and annealing procedures and the characterization and physical property measurements of the Pb-Bi2201 crystals. The availability of these crystals provides a good opportunity to experimentally investigate high-Tc cuprate superconductors, particularly in the overdoped region. [ABSTRACT FROM AUTHOR]