QUANTUM SOLITONS IN THE SAWTOOTH LATTICE

Authors
SEN D SHASTRY BS WALSTEDT RE CAVA R
Citation
D. Sen et al., QUANTUM SOLITONS IN THE SAWTOOTH LATTICE, Physical review. B, Condensed matter, 53(10), 1996, pp. 6401-6405
Citations number
18
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
53
Issue
10
Year of publication
1996
Pages
6401 - 6405
Database
ISI
SICI code
0163-1829(1996)53:10<6401:QSITSL>2.0.ZU;2-N
Abstract
We study the sawtooth lattice of a coupled spin 1/2 Heisenberg system, a variant of the railroad-trestle lattice. The ground state of this s ystem is twofold degenerate with periodic boundary conditions and supp orts kink-antikink excitations, which are distinct in this case, unlik e the railroad-trestle lattice. The resulting low-temperature thermody namics is compared with the recently discovered delafossites YCuO2.5.