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

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.

arXiv comment7 pages, 5 figures

References in corpus (5)

• The pseudogap in high-temperature superconductors: an experimental survey
• Carrier concentrations in Bi_{2}Sr_{2-z}La_{z}CuO_{6+δ} single crystals and their relation to Hall coefficient and thermopower
• High field study of normal state magneto-transport in the thallium cuprate Tl-2201
• Thermopower in the strongly overdoped region of single-layer Bi2Sr2CuO6+d superconductor
• Anomalous electronic susceptibility in Bi2Sr2CuO6+d and comparison with other overdoped cuprates

Cited by in corpus (4)

• The influence of out-of-plane disorder on the formation of pseudogap and Fermi arc in Bi2Sr2-xRxCuOy (R=La and Eu)
• Influence of Disorder on the Hall Effect in Bi${}_2$Sr${}_2$CuO${}_{6+\delta }$
• Upper critical field from normal state fluctuations in Bi${}_2$Sr${}_2$CuO${}_{6+\delta }$
• Persistence of vortexlike phase fluctuations in underdoped to heavily overdoped Bi-2201 cuprates