Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/99450
Type: Artigo de periódico
Title: Numerical Study Of Antiferromagnetic Heisenberg Chains For Spin S= 1 2, Using The Lanczos Method
Author: Medeiros D.
Cabrera G.G.
Abstract: Finite spin chains up to N=28 spins, have been solved in exact numerical form by means of the Lanczos method, in the whole axial-anisotropic region of the XXZ model. We obtain the finite-size behavior of the mass gap as a function of the anistropy, yielding a leading exponential dependence with size. At the isotropic point, size effects are in the form of power-law and logarithmic corrections. Long-range order is estimated through the correlation functions of the finite chain. © 1992.
Editor: 
Rights: fechado
Identifier DOI: 10.1016/0304-8853(92)90365-U
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-0027107340&partnerID=40&md5=3f2dc2f916d9c831090ace726415de78
Date Issue: 1992
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File SizeFormat 
2-s2.0-0027107340.pdf185.53 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.