Thermal conductivity of a quantum spin-1/2 antiferromagnetic chain with magnetic impurities

We present an exact theory that describes how magnetic impurities change the behavior of the thermal
 conductivity for the integrable Heisenberg antiferromagnetic quantum spin-1/2 chain. Single magnetic impurities
 and a large concentration of impurities with similar values of the co...

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Опубліковано в: :Физика низких температур
Дата:2008
Автор: Zvyagin, A.A.
Формат: Стаття
Мова:Англійська
Опубліковано: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2008
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Онлайн доступ:https://nasplib.isofts.kiev.ua/handle/123456789/116849
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Назва журналу:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Цитувати:Thermal conductivity of a quantum spin-1/2
 antiferromagnetic chain with magnetic impurities / A.A. Zvyagin // Физика низких температур. — 2008. — Т. 34, № 3. — С. 273–277. — Бібліогр.: 15 назв. — англ.

Репозитарії

Digital Library of Periodicals of National Academy of Sciences of Ukraine
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author Zvyagin, A.A.
author_facet Zvyagin, A.A.
citation_txt Thermal conductivity of a quantum spin-1/2
 antiferromagnetic chain with magnetic impurities / A.A. Zvyagin // Физика низких температур. — 2008. — Т. 34, № 3. — С. 273–277. — Бібліогр.: 15 назв. — англ.
collection DSpace DC
container_title Физика низких температур
description We present an exact theory that describes how magnetic impurities change the behavior of the thermal
 conductivity for the integrable Heisenberg antiferromagnetic quantum spin-1/2 chain. Single magnetic impurities
 and a large concentration of impurities with similar values of the couplings to the host chain (a weak
 disorder) do not change the linear-in-temperature low-T behavior of the thermal conductivity: Only the slope
 of that behavior becomes smaller, comparing to the homogeneous case. The strong disorder in the distribution
 of the impurity-host couplings produces more rapid temperature growth of the thermal conductivity,
 compared to the linear in T dependence of the homogeneous chain and the chain with a weak disorder. Recent
 experiments on the thermal conductivity in inhomogeneous quasi-one-dimensional quantum spin systems
 manifest qualitative agreement with our results.
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language English
last_indexed 2025-12-07T18:28:10Z
publishDate 2008
publisher Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
record_format dspace
spelling Zvyagin, A.A.
2017-05-16T19:12:30Z
2017-05-16T19:12:30Z
2008
Thermal conductivity of a quantum spin-1/2
 antiferromagnetic chain with magnetic impurities / A.A. Zvyagin // Физика низких температур. — 2008. — Т. 34, № 3. — С. 273–277. — Бібліогр.: 15 назв. — англ.
0132-6414
PACS: 75.10.Jm;71.10–w;72.10.Di;72.15.Eb
https://nasplib.isofts.kiev.ua/handle/123456789/116849
We present an exact theory that describes how magnetic impurities change the behavior of the thermal
 conductivity for the integrable Heisenberg antiferromagnetic quantum spin-1/2 chain. Single magnetic impurities
 and a large concentration of impurities with similar values of the couplings to the host chain (a weak
 disorder) do not change the linear-in-temperature low-T behavior of the thermal conductivity: Only the slope
 of that behavior becomes smaller, comparing to the homogeneous case. The strong disorder in the distribution
 of the impurity-host couplings produces more rapid temperature growth of the thermal conductivity,
 compared to the linear in T dependence of the homogeneous chain and the chain with a weak disorder. Recent
 experiments on the thermal conductivity in inhomogeneous quasi-one-dimensional quantum spin systems
 manifest qualitative agreement with our results.
The financial support from Deutsche Forschungsgemeinschaft (Grant No 436 UKR 17/21/06) is acknowledged. Stimulating discussions with B. Buchner, C. Hess,
 S.-L. Drechsler, V. Kataev, and P. Ribeiro are greatly appreciated
en
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
Физика низких температур
Низкоразмерные и неупорядоченные системы
Thermal conductivity of a quantum spin-1/2 antiferromagnetic chain with magnetic impurities
Article
published earlier
spellingShingle Thermal conductivity of a quantum spin-1/2 antiferromagnetic chain with magnetic impurities
Zvyagin, A.A.
Низкоразмерные и неупорядоченные системы
title Thermal conductivity of a quantum spin-1/2 antiferromagnetic chain with magnetic impurities
title_full Thermal conductivity of a quantum spin-1/2 antiferromagnetic chain with magnetic impurities
title_fullStr Thermal conductivity of a quantum spin-1/2 antiferromagnetic chain with magnetic impurities
title_full_unstemmed Thermal conductivity of a quantum spin-1/2 antiferromagnetic chain with magnetic impurities
title_short Thermal conductivity of a quantum spin-1/2 antiferromagnetic chain with magnetic impurities
title_sort thermal conductivity of a quantum spin-1/2 antiferromagnetic chain with magnetic impurities
topic Низкоразмерные и неупорядоченные системы
topic_facet Низкоразмерные и неупорядоченные системы
url https://nasplib.isofts.kiev.ua/handle/123456789/116849
work_keys_str_mv AT zvyaginaa thermalconductivityofaquantumspin12antiferromagneticchainwithmagneticimpurities