High-Tc superconductivity in a layered system

✍ Scribed by J.D. Fan; Y.M. Malozovsky

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 225 KB
• Volume: 206-207
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/0921-4526(94)00549-b

✦ Synopsis

Superconductivity and metal-insulator phase transition in a layered 2D electron gas, taking into account electron correlations and spin density fluctuations, are considered by means of the Fermi-liquid approach. It is shown that the interaction mediated by the electron-hole excitations in the case of dynamically suppressing the vertex correction by the plasma excitations can lead to high-T~ and phonons play a leading role in the region near the metal-insulator (MI) transition, and that the M1 phase transition takes place when the Fermi momentum is comparable with the inverse interlayer spacing, i.e. Pv ~ 1/c, the results can reproduce and explain the phase diagram.