Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/20772
Share/Export:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Title

Monte Carlo study of the spin-glass phase of the site-diluted dipolar Ising model

AuthorsAlonso, Juan J.; Fernández, Julio F. CSIC
Issue Date5-Feb-2010
CitationPhysical Review B 81(6): 064408 (2010)
AbstractBy tempered Monte Carlo simulations, we study site-diluted Ising systems of magnetic dipoles. All dipoles are randomly placed on a fraction x of all L3 sites of a simple cubic lattice, and point along a given crystalline axis. For xc<x≤1, where xc≃0.65, we find an antiferromagnetic phase below a temperature which vanishes as x→xc from above. At lower values of x, we find an equilibrium spin-glass (SG) phase below a temperature given by kBTsg≃xεd, where εd is a nearest-neighbor dipole-dipole interaction energy. We study (a) the relative mean-square deviation Δq2 of |q|, where q is the SG overlap parameter and (b) ξL/L, where ξL is a correlation length. From their variation with temperature and system size, we determine Tsg. In the SG phase,we find (i) the mean values q and q2 decrease algebraically with L as L increases, (ii) double peaked, but wide, distributions of q/ q/ appear to be independent of L, and (iii) ξL/L rises with L at constant T but extrapolations to 1/L→0 give finite values. All of this is consistent with quasilong-range order in the SG phase.
Description14 páginas, 15 figuras, 3 tablas.-- PACS numbers: 75.10.Nr, 75.10.Hk, 75.40.Cx, 75.50.Lk
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevB.81.064408
URIhttp://hdl.handle.net/10261/20772
DOI10.1103/PhysRevB.81.064408
ISSN1098-0121
E-ISSN1550-235X
Appears in Collections:(ICMA) Artículos




Files in This Item:
File Description SizeFormat
Monte Carlo study .pdf445,37 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work

SCOPUSTM   
Citations

25
checked on May 16, 2022

WEB OF SCIENCETM
Citations

25
checked on May 22, 2022

Page view(s)

323
checked on May 23, 2022

Download(s)

257
checked on May 23, 2022

Google ScholarTM

Check

Altmetric

Dimensions


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