ELECTRONIC PHASE-SEPARATION - EXTENDED MEAN-FIELD CALCULATIONS FOR CUO2 LAYERS IN HIGH-T(C) SUPERCONDUCTORS

Authors
KLEMM D LETZ M SIGMUND E ZAVT GS
Citation
D. Klemm et al., ELECTRONIC PHASE-SEPARATION - EXTENDED MEAN-FIELD CALCULATIONS FOR CUO2 LAYERS IN HIGH-T(C) SUPERCONDUCTORS, Physical review. B, Condensed matter, 50(10), 1994, pp. 7046-7055
Citations number
22
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
50
Issue
10
Year of publication
1994
Pages
7046 - 7055
Database
ISI
SICI code
0163-1829(1994)50:10<7046:EP-EMC>2.0.ZU;2-N
Abstract
We examine the stability of spin-polarized cluster states (ferrons) wh ich appear by hole doping of the antiferromagnetically ordered CuO2 pl anes in the high-T(c) cuprates. The influence of additional holes is c alculated within a self-consistent mean-field-type approximation. The variation procedure for the spin polarization is extended over up to f ive CuO2 plaquettes. Different correlation terms (U(pd), U(p)) affecti ng the cluster stability are discussed. For all cases the cluster bind ing energy and the polarization of the Cu spins are calculated. In add ition the interaction between different clusters is discussed.