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The pseudogap phase above the critical temperature of high $T_{c}$superconductors (HTSC) presents different energy scales and it is currently amatter of intense study. The complexity of the HTSC normal state requires veryaccurate measurements with the purpose of distinguishing different types ofphenomena. Here we have performed systematically studies through electricalresistivity ($\rho$) measurements by several different current densities inorder to obtain an optimal current for each sample. This approach allows todetermine reliable values of the pseudogap temperature $T^{*}(n)$, the layercoupling temperature between the superconductor layers $T_{LD}(n)$, thefluctuation temperature $T_{scf}(n)$ and the critical temperature $T_{c}(n)$ asfunction of the doping $n$. The interpretation of these different temperaturescales allows to characterize possible scenarios for the (Hg,Re) - 1223 normalstate. This method, described in detail here, and used to derive the(Hg,Re)-1223 phase diagram is general and can be applied to any HTSC.Comment: 31 pages, 12 figures, Latex; 25 pages, LaTeX; 11 figures; rewrited  section II and III; added 18 reference; rewrited title, added discussion  sectio

Resistivity study of the pseudogap phase for (Hg,Re)-1223 superconductors