Comparison between disordered quantum spin-1/2 chains

We study the magnetic properties of two types of one-dimensional XX spin-1/2 chains. The first type has only nearest-neighbor interactions which can be either antiferromagnetic or ferromagnetic, and the second type has both nearest-neighbor and next-nearest-neighbor interactions, but only antiferrom...

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Autores principales: Lamas, Carlos Alberto, Cabra, Daniel Carlos, Grynberg, Marcelo Daniel, Rossini, Gerardo Luis
Formato: Articulo
Lenguaje:Inglés
Publicado: 2006
Materias:
Ciencias Exactas
Física
disorder
quantum magnetism
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/27312
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-27312
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
disorder
quantum magnetism
spellingShingle Ciencias Exactas
Física
disorder
quantum magnetism
Lamas, Carlos Alberto
Cabra, Daniel Carlos
Grynberg, Marcelo Daniel
Rossini, Gerardo Luis
Comparison between disordered quantum spin-1/2 chains
topic_facet Ciencias Exactas
Física
disorder
quantum magnetism
description We study the magnetic properties of two types of one-dimensional XX spin-1/2 chains. The first type has only nearest-neighbor interactions which can be either antiferromagnetic or ferromagnetic, and the second type has both nearest-neighbor and next-nearest-neighbor interactions, but only antiferromagnetic in character. We study these systems in the presence of low magnetic fields both analytically and numerically. Comparison of results shows a close relation between the two systems, which is in agreement with results previously found in Heisenberg chains by means of a numerical real-space renormalization-group procedure.
format Articulo
Articulo
author Lamas, Carlos Alberto
Cabra, Daniel Carlos
Grynberg, Marcelo Daniel
Rossini, Gerardo Luis
author_facet Lamas, Carlos Alberto
Cabra, Daniel Carlos
Grynberg, Marcelo Daniel
Rossini, Gerardo Luis
author_sort Lamas, Carlos Alberto
title Comparison between disordered quantum spin-1/2 chains
title_short Comparison between disordered quantum spin-1/2 chains
title_full Comparison between disordered quantum spin-1/2 chains
title_fullStr Comparison between disordered quantum spin-1/2 chains
title_full_unstemmed Comparison between disordered quantum spin-1/2 chains
title_sort comparison between disordered quantum spin-1/2 chains
publishDate 2006
url http://sedici.unlp.edu.ar/handle/10915/27312
work_keys_str_mv AT lamascarlosalberto comparisonbetweendisorderedquantumspin12chains
AT cabradanielcarlos comparisonbetweendisorderedquantumspin12chains
AT grynbergmarcelodaniel comparisonbetweendisorderedquantumspin12chains
AT rossinigerardoluis comparisonbetweendisorderedquantumspin12chains
bdutipo_str Repositorios
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