On the Ratio of the Energy Gap Amplitude to the Critical Temperature for Cuprates

摘要: The model for the cuprates based on modified electron-phonon pairing mechanism has been tested. For this purpose, superconductors with high value of critical temperature have taken into consideration. In particular: ${\rm YBa_{2}Cu_{3}O_{7-y}}$, HgBa_{2}CuO_{4+y}}$, HgBa_{2}Cu_{1-x}Zn_{x}O_{4+y}}$, and HgBa_{2}Ca_{2}Cu_{3}O_{8+y}}$. It shown that dependence ratio $R_{1}\equiv 2\Delta_{tot}^{(0)}/k_{B}T_{C}$ doping ($p$) can be properly predicted in framework presented theory; symbol $\Delta_{tot}^{(0)}$ denotes energy gap amplitude at zero Kelvin, $T_{C}$ is temperature. numerical results supplemented by formula which describes function $R_{1}(p)$.