Reply to Comment on 'High-field studies of superconducting fluctuations in high-Tc cuprates: Evidence for a small gap distinct from the large pseudogap' by M.V. Ramallo et al

摘要

The experimental investigations done in our paper Phys.Rev.B84,014522(2011)allowed us to establish that the superconducting fluctuations (SCF) always dieout sharply with increasing T. But contrary to the claim done in the comment ofRamallo et al., this sharp cutoff of SCF measured in YBa2Cu3O{6+x} depends onhole doping and/or disorder. So our data cannot be used to claim for auniversality of the extended gaussian Ginzburg Landau theory proposed by theauthors of the comment. Furthermore, to explain quantitatively our data nearoptimal doping using this model they need to consider that fluctuations in thetwo CuO2 planes of a bilayer are totally decoupled, which is not physicallywell justified. On the contrary a consistent interpretation of all our data(paraconductivity, Nernst effect and magnetoresistance) has been done byconsidering that the coupling between the two layers of the unit cell isdominant at least up to 1.1Tc.