Angular field dependence of the Nernst effect in Bi2Sr2CaCu2O8+d

G. BRIDOUX; P. PEDRAZZINI; F. DE LA CRUZ; G. NIEVA

Dresden

Conferencia; 8th International Conference on Materials and Mechanisms of Superconductivity and High Temperature Superconductors; 2006

The anomalous Nernst effect in hole-doped cuprates has been interpreted in terms of the existence of a superconducting order parameterwell above the transition temperature, Tc(H). In order to improve the understanding of this problem, we have measured the angularfield dependence of the Nernst signal in Bi2Sr2CaCu2O8+d single crystals. The experiment was done tilting the magnetic field with respectto the direction of the temperature gradient, above and below Tc(H), with applied fields up to 16 T. We have found that all the curves arescaled on one curve against the reduced field Hcosh at a fixed temperature.