CUED Publications database

A relationship between electronic structure effective parameters and T<inf>c</inf> in monolayered cuprate superconductors

Moreira, IDPR and Muñoz, D and Illas, F and De Graaf, C and Garcia-Bach, MA (2001) A relationship between electronic structure effective parameters and T<inf>c</inf> in monolayered cuprate superconductors. Chemical Physics Letters, 345. pp. 183-188. ISSN 0009-2614

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Abstract

For a broad class of high-Tc superconductor cuprates with nearly independent Cu-O planes, the values of the parameters defining the t-J model Hamiltonian are obtained from accurate ab initio electronic structure calculations on embedded cluster models. From the calculated t and J values a clear-cut correlation between Tc and these values emerges. Based on the ideas of resonating-valence-bond (RVB) theory, a possible interpretation of the origin of this correlation is discussed. The present work stresses the adequacy of the t-J model and strongly supports the idea of a pairing mechanism in cuprates mediated by magnetic interactions. © 2001 Elsevier Science B.V.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:10
Last Modified: 07 Mar 2019 13:25
DOI: 10.1016/S0009-2614(01)00846-6