Key features of the hole spectrum in three-band Hubbard model for High-Tc superconductors

✍ Scribed by A.F. Barabanov; V.M. Beresovsky; E. Ža̧sinas; L.A. Maksimov

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 308 KB
• Volume: 252
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(95)00469-6

✦ Synopsis

In the framework of the hole effective hamiltonian for the three-band model of the CuO 2 plane in high-T~ superconductors the hole spectrum ¢(k) is investigated on the base of the spin polaron concept. Key features of the experimentally observed dispersion are described: (1) extended saddle point and (2) isotropic band bottom. The important role of direct O-O hoppings and frustration in magnetic system is revealed.