Jahn-Teller-effect mediated superconductivity in oxides

摘要: Abstract A mechanism for high Tc superconductivity in layered oxides is studied based on the cooperative Jahn-Teller effect proposed by Kamimura. Origin of attractive interactions Cooper pairing worked out extracting relevant modes. The undoped system may then be described as a τ-ferromagnetic states, which τ, representing d orbital occupation, coupled to distortions, while real spins, also are ordered anti-ferromagnetically superexchange interactions. carriers created doping interact exchanging Jahn-Teller-mode phonons well τ-spin waves and We predict due these electron-ligand couplings, expected strong, since has an electronic origin, involves strong elastic