RCUO(2.66) DELAFOSSITES - A DILUTE S=1 2 KAGOME-LIKE LATTICE/

Authors
NUNEZREGUEIRO MD LACROIX C CANALS B
Citation
Md. Nunezregueiro et al., RCUO(2.66) DELAFOSSITES - A DILUTE S=1 2 KAGOME-LIKE LATTICE/, Physical review. B, Condensed matter, 54(2), 1996, pp. 736-739
Citations number
18
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
54
Issue
2
Year of publication
1996
Pages
736 - 739
Database
ISI
SICI code
0163-1829(1996)54:2<736:RD-ADS>2.0.ZU;2-R
Abstract
The hexagonal oxygen superlattice H(root 3 x root 3) phase of RCuO(2.6 6) delafossite-type compounds, R=La or Y, provides a unique example of an s=1/2 diluted kagome system. We perform a theoretical study of the magnetic properties of this lattice, both in the insulating and the m etallic cases. We attribute to the particular topology the absence of magnetic order experimentally observed down to low temperatures. The r oles of longer-range interactions, defects, and quantum effects are di scussed.