Thermopower in the strongly overdoped region of single-layer Bi2Sr2CuO6+d superconductor
Z. Konstantinovic, G. Le Bras, A. Forget, D. Colson, F. Jean, G. Collin, M. Ocio, C. Ayache
Abstract
The evolution of the thermoelectric power S(T) with doping, p, of single-layer Bi2Sr2CuO6+d ceramics in the strongly overdoped region is studied in detail. Analysis in term of drag and diffusion contributions indicates a departure of the diffusion from the T-linear metallic behavior. This effect is increased in the strongly overdoped range (p~0.2-0.28) and should reflect the proximity of some topological change.
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