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20 April 2024
 
  » arxiv » cond-mat/0211135

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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 ;
Date 7 Nov 2002
Subject Superconductivity; Strongly Correlated Electrons | cond-mat.supr-con cond-mat.str-el
AbstractWe 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.
Source arXiv, cond-mat/0211135
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