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Thermoelectric power of Bi_2Sr_2CaCu_2O_8 single crystals with varying oxygen stochiometry

We report on the in - plane (Sab) and the out-of-plane (Sc) thermoelectric power of Bi2Sr2CaCu2O8 single crystals below 300 K. The Sab has been measured as a function of the oxygen stoichiometry. Our interpretation of the results is based on a model in which there is a narrow peak in the density of states of the charge carriers near the Fermi level.

thermoelectric power ; high T_c superconductor ; single crystal

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