Pregled bibliografske jedinice broj: 49743
Algebraic extraction of one-particle fields induced by repulsion on copper sites in the Emery model
Algebraic extraction of one-particle fields induced by repulsion on copper sites in the Emery model // Proceedings of the International Conference on Materials and Mechanisms of Superconductivity - High Temperature Superconductors IV / Wyder, P. (ur.).
Amsterdam: Elsevier, 1994. (poster, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
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Naslov
Algebraic extraction of one-particle fields induced by repulsion on copper sites in the Emery model
Autori
Sunko, Denis K.
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni
Izvornik
Proceedings of the International Conference on Materials and Mechanisms of Superconductivity - High Temperature Superconductors IV
/ Wyder, P. - Amsterdam : Elsevier, 1994
Skup
International Conference on Materials and Mechanisms of Superconductivity - High Temperature Superconductors IV
Mjesto i datum
Grenoble, Francuska, 05.07.1994. - 09.07.1994
Vrsta sudjelovanja
Poster
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
strong correlations; high-Tc superconductors
Sažetak
A model of free fermions is described, which embodies the strong local correlations on copper sites in the CuO/sub 2/ planes. One-particle fields induced by the correlations are extracted algebraically and found to renormalize the copper-oxygen hopping and change the band-widths of the effective one-particle Hamiltonian. The strength of these fields is adjusted through a single variational parameter, dependent on the band filling. It is found that additional hoppings appear among oxygen sites, even if only the copper-oxygen overlap was originally present.
Izvorni jezik
Engleski
