Energy spectrum of high Tc oxides and pair-breaking
- 9 Downloads
The value of the critical temperature of the cuprates correlates with the doping level and is affected by the interplay of two competing factors: 1) the increase in carrier concentration, and 2) the pair-breaking effect of magnetic impurities. A new parameter, “intrinsic” Tc is introduced. The value of Tc;intr appears to be similar for different cuprates and to be equal to 160–170K. This is an upper limit of Tc in the cuprates.
KeywordsCritical Temperature Carrier Concentration Doping Level Magnetic Impurity Critical Magnetic Field
- a)A. Abrikosov and L. Gor'kov, Sov. Phys. JETP 12, 1243 (1961); b) P. de Gennes, Phys. Condens Matter 3, 79 (1964); P. de Gennes Superconductivity in Metals and Alloys, Benjamin NY (1966); c) S.Skalski, O. Betbeder, P. Weiss, Phy. Rev. 136, A1500 (1964); d) V. Kresin, S.A. Wolf, Phys. Rev. B51, 1229 (1995).Google Scholar