Thumbnail
Access Restriction
Open

Author Sachdev, S. ♦ Read, N.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ VANADIUM OXIDES ♦ ANTIFERROMAGNETISM ♦ CALCIUM OXIDES ♦ HEISENBERG MODEL ♦ PARAMAGNETISM ♦ SYMMETRY BREAKING ♦ SPIN ORIENTATION ♦ PHASE DIAGRAMS ♦ SQUARE LATTICES
Abstract We discuss the quantum paramagnetic phases of Heisenberg antiferromagnets on the 1/5-depleted square lattice found in CaV{sub 4}O{sub 9}. The possible phases of the quantum dimer model on this lattice are obtained by a mapping to a quantum-mechanical height model. In addition to the {open_quote}{open_quote}decoupled{close_quote}{close_quote} phases found earlier, we find a possible intermediate spin-Peierls phase with spontaneously broken lattice symmetry. Experimental signatures of the different quantum paramagnetic phases are discussed. {copyright} {ital 1996 The American Physical Society.}
ISSN 00319007
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-12-01
Publisher Place United States
Journal Physical Review Letters
Volume Number 77
Issue Number 23


Open content in new tab

   Open content in new tab