English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/97026
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Matrix-product approach to conjugated polymers

AuthorsMartín-Delgado, Miguel Ángel; Sierra, Germán ; Pleutin, S.; Jeckelmann, E.
Issue Date2000
PublisherAmerican Physical Society
CitationPhysical Review B 61: 1841- 1846 (2000)
AbstractThe matrix product method (MPM) has been used in the past to generate variational Ansätze of the ground state (GS) of spin chains and ladders. In this paper we apply the MPM to study the GS of conjugated polymers in the valence bond basis, exploiting the charge and spin conservation as well as the electron-hole and spin-parity symmetries. We employ the U-V-δ Hamiltonian, which is a simplified version of the Pariser-Parr-Pople Hamiltonian. For several coupling constants U and V and dimerizations δ, we compute the GS energy per monomer, which agrees within a 2-4% accuracy with the density-matrix renormalization group results. We also show the evolution of the MP-variational parameters in the weak and strong dimerization regimes. ©2000 The American Physical Society.
URIhttp://hdl.handle.net/10261/97026
DOI10.1103/PhysRevB.61.1841
Identifiersdoi: 10.1103/PhysRevB.61.1841
issn: 0163-1829
Appears in Collections:(CFMAC-IFF) Artículos
Files in This Item:
File Description SizeFormat 
MDelgado.pdf83,24 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.