Hole-induced novel spin state within haldane gap in Nd2-xCa xBaNiO5

Tomoyuki Sasaki; Tetsuya Yokoo; Susumu Katano; Jun Akimitsu

doi:10.1143/JPSJ.74.267

Hole-induced novel spin state within haldane gap in Nd_2-xCa _xBaNiO₅

Tomoyuki Sasaki, Tetsuya Yokoo, Susumu Katano, Jun Akimitsu

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

2 Citations (Scopus)

Abstract

Static and dynamical spin properties in a hole-doped one-dimensional Haldane chain system have been investigated by magnetization and neutron scattering measurements on antiferromagnetic Nd_2-xCa _xBaNiO₅. Spin-glass-like weak ferromagnetic behavior and an incommensurate dynamical structure were observed, which are similar to those reported in the Haldane system Y_2-xCa_xBaNiO₅. A novel excitation, moreover, has been revealed at 10 meV because of complete the shift in the Haldane gap due to three-dimensional antiferromagnetic ordering, which possibly provides a total picture of a hole-induced quantum Haldane chain.

Original language	English
Pages (from-to)	267-270
Number of pages	4
Journal	journal of the physical society of japan
Volume	74
Issue number	1
DOIs	https://doi.org/10.1143/JPSJ.74.267
Publication status	Published - Jan 2005
Externally published	Yes

Keywords

Haldane gap
Heisenberg chain
Inelastic neutron scattering
Magnetic excitation

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.74.267

Cite this

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title = "Hole-induced novel spin state within haldane gap in Nd2-xCa xBaNiO5",

abstract = "Static and dynamical spin properties in a hole-doped one-dimensional Haldane chain system have been investigated by magnetization and neutron scattering measurements on antiferromagnetic Nd2-xCa xBaNiO5. Spin-glass-like weak ferromagnetic behavior and an incommensurate dynamical structure were observed, which are similar to those reported in the Haldane system Y2-xCaxBaNiO5. A novel excitation, moreover, has been revealed at 10 meV because of complete the shift in the Haldane gap due to three-dimensional antiferromagnetic ordering, which possibly provides a total picture of a hole-induced quantum Haldane chain.",

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AU - Sasaki, Tomoyuki

AU - Yokoo, Tetsuya

AU - Katano, Susumu

AU - Akimitsu, Jun

PY - 2005/1

Y1 - 2005/1

N2 - Static and dynamical spin properties in a hole-doped one-dimensional Haldane chain system have been investigated by magnetization and neutron scattering measurements on antiferromagnetic Nd2-xCa xBaNiO5. Spin-glass-like weak ferromagnetic behavior and an incommensurate dynamical structure were observed, which are similar to those reported in the Haldane system Y2-xCaxBaNiO5. A novel excitation, moreover, has been revealed at 10 meV because of complete the shift in the Haldane gap due to three-dimensional antiferromagnetic ordering, which possibly provides a total picture of a hole-induced quantum Haldane chain.

AB - Static and dynamical spin properties in a hole-doped one-dimensional Haldane chain system have been investigated by magnetization and neutron scattering measurements on antiferromagnetic Nd2-xCa xBaNiO5. Spin-glass-like weak ferromagnetic behavior and an incommensurate dynamical structure were observed, which are similar to those reported in the Haldane system Y2-xCaxBaNiO5. A novel excitation, moreover, has been revealed at 10 meV because of complete the shift in the Haldane gap due to three-dimensional antiferromagnetic ordering, which possibly provides a total picture of a hole-induced quantum Haldane chain.

KW - Haldane gap

KW - Heisenberg chain

KW - Inelastic neutron scattering

KW - Magnetic excitation

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