Spin Dynamics in an Ising-Like Quantum Spin Chain with Nonmagnetic Impurities

Shinichi Itoh; Hironobu Ikeda; Daisuke Sugimoto; Kazuaki Iwasa; Roger S. Eccleston

doi:10.1143/JPSJ.64.927

Spin Dynamics in an Ising-Like Quantum Spin Chain with Nonmagnetic Impurities

Shinichi Itoh, Hironobu Ikeda, Daisuke Sugimoto, Kazuaki Iwasa, Roger S. Eccleston

SCI - Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Neutron inelastic-scattering experiments on an Ising-like quantum antiferromagnetic chain with nonmagnetic impurities, CsCo_cMg_1−cCl₃ (c=1, 0.95, 0.9, 0.85, 0.6 and 0.4), were performed. The concentration dependence of the spin dynamics showed that although the solitons and the spin-wave continuum state were stable for a small amount of nonmagnetic impurities, they vanished at c=0.8. We also observed the coexistence of Ising-cluster excitations and intra-cluster excitations at low temperatures. These results can be well interpreted by a theory incorporated with next-nearest-neighbor interactions in the chain.

Original language	English
Pages (from-to)	927-933
Number of pages	7
Journal	journal of the physical society of japan
Volume	64
Issue number	3
DOIs	https://doi.org/10.1143/JPSJ.64.927
Publication status	Published - 1995 Mar

Keywords

CsCoMgCl
Ising-like antiferromagnetic chain
exchange interaction
inelastic neutron scattering
nonmagnetic impurity
spin dynamics

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1143/JPSJ.64.927

Cite this

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title = "Spin Dynamics in an Ising-Like Quantum Spin Chain with Nonmagnetic Impurities",

abstract = "Neutron inelastic-scattering experiments on an Ising-like quantum antiferromagnetic chain with nonmagnetic impurities, CsCocMg1−cCl3 (c=1, 0.95, 0.9, 0.85, 0.6 and 0.4), were performed. The concentration dependence of the spin dynamics showed that although the solitons and the spin-wave continuum state were stable for a small amount of nonmagnetic impurities, they vanished at c=0.8. We also observed the coexistence of Ising-cluster excitations and intra-cluster excitations at low temperatures. These results can be well interpreted by a theory incorporated with next-nearest-neighbor interactions in the chain.",

keywords = "CsCoMgCl, Ising-like antiferromagnetic chain, exchange interaction, inelastic neutron scattering, nonmagnetic impurity, spin dynamics",

author = "Shinichi Itoh and Hironobu Ikeda and Daisuke Sugimoto and Kazuaki Iwasa and Eccleston, {Roger S.}",

year = "1995",

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doi = "10.1143/JPSJ.64.927",

language = "English",

volume = "64",

pages = "927--933",

journal = "Journal of the Physical Society of Japan",

issn = "0031-9015",

publisher = "Physical Society of Japan",

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TY - JOUR

T1 - Spin Dynamics in an Ising-Like Quantum Spin Chain with Nonmagnetic Impurities

AU - Itoh, Shinichi

AU - Ikeda, Hironobu

AU - Sugimoto, Daisuke

AU - Iwasa, Kazuaki

AU - Eccleston, Roger S.

PY - 1995/3

Y1 - 1995/3

N2 - Neutron inelastic-scattering experiments on an Ising-like quantum antiferromagnetic chain with nonmagnetic impurities, CsCocMg1−cCl3 (c=1, 0.95, 0.9, 0.85, 0.6 and 0.4), were performed. The concentration dependence of the spin dynamics showed that although the solitons and the spin-wave continuum state were stable for a small amount of nonmagnetic impurities, they vanished at c=0.8. We also observed the coexistence of Ising-cluster excitations and intra-cluster excitations at low temperatures. These results can be well interpreted by a theory incorporated with next-nearest-neighbor interactions in the chain.

AB - Neutron inelastic-scattering experiments on an Ising-like quantum antiferromagnetic chain with nonmagnetic impurities, CsCocMg1−cCl3 (c=1, 0.95, 0.9, 0.85, 0.6 and 0.4), were performed. The concentration dependence of the spin dynamics showed that although the solitons and the spin-wave continuum state were stable for a small amount of nonmagnetic impurities, they vanished at c=0.8. We also observed the coexistence of Ising-cluster excitations and intra-cluster excitations at low temperatures. These results can be well interpreted by a theory incorporated with next-nearest-neighbor interactions in the chain.

KW - CsCoMgCl

KW - Ising-like antiferromagnetic chain

KW - exchange interaction

KW - inelastic neutron scattering

KW - nonmagnetic impurity

KW - spin dynamics

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DO - 10.1143/JPSJ.64.927

M3 - Article

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JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

IS - 3

ER -

Spin Dynamics in an Ising-Like Quantum Spin Chain with Nonmagnetic Impurities

Abstract

Keywords

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