Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/9725
Title: | Variational localized-site cluster expansions. X. Dimerization in linear Heisenberg chains |
Author: | Klein, D. J. García Bach, Ma. de los Ángeles |
Keywords: | Magnetisme València (Química) Clústers Magnetism Valence (Theoretical chemistry) Clústers |
Issue Date: | 1979 |
Publisher: | The American Physical Society |
Abstract: | Ground-state instability to bond alternation in long linear chains is considered from the point of view of valence-bond (VB) theory. This instability is viewed as the consequence of a long-range order (LRO) which is expected if the ground state is reasonably described in terms of the Kekulé states (with nearest-neighbor singlet pairing). It is argued that the bond alternation and associated LRO predicted by this simple, VB picture is retained for certain linear Heisenberg models; many-body VB calculations on spin s=1 / 2 and s=1 chains are carried out in a test of this argument. |
Note: | Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.19.877 |
It is part of: | Physical Review B, 1979, vol. 19, núm. 2, p. 877-886. |
URI: | http://hdl.handle.net/2445/9725 |
Related resource: | http://dx.doi.org/10.1103/PhysRevB.19.877 |
ISSN: | 0163-1829 |
Appears in Collections: | Articles publicats en revistes (Física de la Matèria Condensada) |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.