"Comb-like" polarons and bipolarons in high-T-c materials

Authors
Hankiewicz, EM Buczko, R Wilamowski, Z
Citation
Em. Hankiewicz et al., "Comb-like" polarons and bipolarons in high-T-c materials, ACT PHY P A, 97(1), 2000, pp. 185-188
Citations number
6
Categorie Soggetti
Physics
Journal title
ACTA PHYSICA POLONICA A
ISSN journal
05874246 → ACNP
Volume
97
Issue
1
Year of publication
2000
Pages
185 - 188
Database
ISI
SICI code
0587-4246(200001)97:1<185:"PABIH>2.0.ZU;2-S
Abstract
Diagonalization of Hamiltonian composed from d-d exchange interactions betw een localized d spins of antiferromagnetic duster and p-d interaction with the spin of carriers indicates a possibility of formation of pure magnetic polarons. The most energetically favorable solution occurs when the carrier density in CuO2 planes is distributed on every second spin. These "comb-li ke" polarons have a tendency to bind into pairs (bipolarons) "glued" by the antiferromagnetic medium.