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Failure of the empirical OCT law in the Bi2Sr2CuO6+d compound

Z. Konstantinovic·G. Le Bras·A. Forget·D. Colson·F. Jean·G. Collin·Z. Z. Li·H. Raffy·C. Ayache
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Abstract

We have studied the evolution of the thermoelectric power S(T) with oxygen doping of single-layered Bi2Sr2CuO6+d thin films and ceramics in the overall superconducting (Tc, S290K) phase diagram. While the universal relation between the room-temperature thermopower S290K and the critical temperature is found to hold in the strongly overdoped region (d>0.14), a strong violation is observed in the underdoped part of the phase diagram. The observed behaviour is compared with other cuprates and the different scenarios are discussed.

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Z. Konstantinovic, G. Le Bras, A. Forget, D. Colson, F. Jean, G. Collin, Z. Z. Li, H. Raffy, C. Ayache. 2002-11-07. Failure of the empirical OCT law in the Bi2Sr2CuO6+d compound. https://doi.org/10.1209/epl%2Fi2003-00354-1

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