HALDANE-GAP IN S=2 XXZ QUANTUM ANTIFERROMAGNET

Authors
KADOLKAR CY GOVEAS N GHOSH DK MURTHY S
Citation
Cy. Kadolkar et al., HALDANE-GAP IN S=2 XXZ QUANTUM ANTIFERROMAGNET, Journal of magnetism and magnetic materials, 177, 1998, pp. 638-639
Citations number
8
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Journal of magnetism and magnetic materials → ACNP
ISSN journal
03048853
Volume
177
Year of publication
1998
Part
1
Pages
638 - 639
Database
ISI
SICI code
0304-8853(1998)177:<638:HISXQA>2.0.ZU;2-U
Abstract
S = 2 quantum antiferromagnetic chains described by XXZ Heisenberg Ham iltonian with uniaxial anisotropy has been studied using DMRG techniqu e. Chains of length tip to 92 have been considered keeping 50 most sig nificant states in the density matrix. Variation of the ground-state e nergy and Haldane gap with anisotropy parameters is reported. (C) 1998 Elsevier Science B.V. All rights reserved.