Optical properties of doped antiferromagnets

Authors
Fleck, M Lichtenstein, AI Oles, AM Hedin, L
Citation
M. Fleck et al., Optical properties of doped antiferromagnets, J SUPERCOND, 12(1), 1999, pp. 147-149
Citations number
15
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF SUPERCONDUCTIVITY
ISSN journal
08961107 → ACNP
Volume
12
Issue
1
Year of publication
1999
Pages
147 - 149
Database
ISI
SICI code
0896-1107(199902)12:1<147:OPODA>2.0.ZU;2-S
Abstract
We investigate the consequences of an incommensurate magnetic order in dope d La2-xSrxCuO4 using dynamical mean-field theory for the effective single-b and model. The high-energy optical transitions are due to high-energy excit ations across large Mott-Hubbard "gap," while low-energy excitations involv e a pseudogap induced by the local spin order. The latter lead to a strong drop in the scattering rate at low omega, in qualitative agreement with the experimental data.