Random Bond XXZ Chains with Modulated Couplings
The magnetization behavior of q -periodic antiferromagnetic spin- 1 / 2 Heisenberg chains under uniform magnetic fields is investigated in a background of disorder exchange distributions. By means of both real space decimation procedures and numerical diagonalizations in XX chains, it is found that...
Guardado en:
Autores principales: | , , , , |
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Formato: | Articulo |
Lenguaje: | Inglés |
Publicado: |
2000
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Materias: | |
Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/104629 http://hdl.handle.net/11336/98446 |
Aporte de: |
id |
I19-R120-10915-104629 |
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record_format |
dspace |
institution |
Universidad Nacional de La Plata |
institution_str |
I-19 |
repository_str |
R-120 |
collection |
SEDICI (UNLP) |
language |
Inglés |
topic |
Física Decimation |
spellingShingle |
Física Decimation Cabra, Daniel Carlos De Martino, A. Grynberg, Marcelo Daniel Peysson, S. Pujol, P. Random Bond XXZ Chains with Modulated Couplings |
topic_facet |
Física Decimation |
description |
The magnetization behavior of q -periodic antiferromagnetic spin- 1 / 2 Heisenberg chains under uniform magnetic fields is investigated in a background of disorder exchange distributions. By means of both real space decimation procedures and numerical diagonalizations in XX chains, it is found that for binary disorder the magnetization exhibits wide plateaus at values of 1 + 2 ( p − 1 ) / q , where p is the disorder strength. In contrast, no spin gaps are observed in the presence of continuous exchange distributions. We also study the magnetic susceptibility at low magnetic fields. |
format |
Articulo Articulo |
author |
Cabra, Daniel Carlos De Martino, A. Grynberg, Marcelo Daniel Peysson, S. Pujol, P. |
author_facet |
Cabra, Daniel Carlos De Martino, A. Grynberg, Marcelo Daniel Peysson, S. Pujol, P. |
author_sort |
Cabra, Daniel Carlos |
title |
Random Bond XXZ Chains with Modulated Couplings |
title_short |
Random Bond XXZ Chains with Modulated Couplings |
title_full |
Random Bond XXZ Chains with Modulated Couplings |
title_fullStr |
Random Bond XXZ Chains with Modulated Couplings |
title_full_unstemmed |
Random Bond XXZ Chains with Modulated Couplings |
title_sort |
random bond xxz chains with modulated couplings |
publishDate |
2000 |
url |
http://sedici.unlp.edu.ar/handle/10915/104629 http://hdl.handle.net/11336/98446 |
work_keys_str_mv |
AT cabradanielcarlos randombondxxzchainswithmodulatedcouplings AT demartinoa randombondxxzchainswithmodulatedcouplings AT grynbergmarcelodaniel randombondxxzchainswithmodulatedcouplings AT peyssons randombondxxzchainswithmodulatedcouplings AT pujolp randombondxxzchainswithmodulatedcouplings |
bdutipo_str |
Repositorios |
_version_ |
1764820442120454144 |