High Tc as a consequence of structure deformation

✍ Scribed by R.P. Djajic; B.S. Tosic; J.P. Setrajcic; D.Lj. Mirjanic

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 155 KB
• Volume: 185-189
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(91)92159-9

✦ Synopsis

Based on the experimental fact that doped perovskite structures behave as a system of energetically independent thin layers we developed a theoretical model for a single layer behaviour. It was shown that electron and phonon spectra are functions of azimuthal angle which in turn gives the specific relations for T c which on the other hand differs significantly from the corresponding value in the BCS theory. The crucial fact, which allows the solution of this equation with high T o is the electron-electron interaction constant which in a thin doped layer is for an order or two orders of magnitude greater than the same interaction constant in the ideal infinite structure.