Superconducting Critical Temperature of Layered Mercurocuprate Family |
| A.L. Kuzemskya, I.G. Kuzemskayab and A.A. Cheglokova a Bogolyubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia b High Pressure Physics Institute, Russian Academy of Sciences, 142092 Troitsk, Moscow Region, Russia |
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| We study the physics of the mercurocuprate family from the structural point of view. We present a phenomenological approach determining the critical temperatures for homologous series HgBa2Can-1CunO2n+2+δ depending on the number of layers n. The model is based on the Lawrence- Doniach theory of layered superconductors modified for the case of inequivalent layers. The redistribution of charge was taken into account. This leads to observable nonmonotonic "bell"-shaped dependence of Tc (n) and provides a quantitative explanation of the experiments. |
| DOI: 10.12693/APhysPolA.97.241 PACS numbers: 74.25.Nf, 74.72.Bk, 74.72.Gr |