Neutron scattering study of linear-chain Haldane compounds NDMAZ and NDMAP

N. Metoki; Y. Koike; Y. Matsuoka; T. Kobayashi; M. Yamashita

doi:10.1016/S0304-8853(00)01196-3

Neutron scattering study of linear-chain Haldane compounds NDMAZ and NDMAP

N. Metoki, Y. Koike, Y. Matsuoka, T. Kobayashi, M. Yamashita

Advanced Institute for Materials Research (AIMR)

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

2 Citations (Scopus)

Abstract

Neutron scattering experiments were carried out for the new Haldane compounds Ni(C₅H₁₄N₂)₂N ₃(ClO₄) (NDMAZ) and Ni(C₅H₁₄Nj) ₂N₃(PF₆) (NDMAP) in the magnetic field up to 10T in order to investigate the field-induced long-range ordering and the spin excitation. For NDMAZ, the triplet excited state (1.61,1.76, and 3.2 meV) and field dependence of these levels were observed at Q = (000.5). From these data, the intra-chain coupling constant = 4.3 meV and the anisotropic parameters D = 0.76meV and |E| = 0.038 meV were estimated. For NDMAP the gap was observed at about 0.48 and 0.64 meV at Q = (000.5). By applying the field of 5 T, the first excited state shifted below the resolution less than 0.1.3 meV. Above the critical field H_c, the intensities of singlet-triplet excitation becomes very weak. This work is the first neutron scattering study on a Haldane system above the critical fields

Original language	English
Pages (from-to)	414-416
Number of pages	3
Journal	Journal of Magnetism and Magnetic Materials
Volume	226-230
Issue number	PART I
DOIs	https://doi.org/10.1016/S0304-8853(00)01196-3
Publication status	Published - 2001

Keywords

Antiferromagnet-one-dimensional
Haldane gap
Haldane system
Neutron scattering

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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@article{b727afa69c894ab1805766123315c219,

title = "Neutron scattering study of linear-chain Haldane compounds NDMAZ and NDMAP",

abstract = "Neutron scattering experiments were carried out for the new Haldane compounds Ni(C5H14N2)2N 3(ClO4) (NDMAZ) and Ni(C5H14Nj) 2N3(PF6) (NDMAP) in the magnetic field up to 10T in order to investigate the field-induced long-range ordering and the spin excitation. For NDMAZ, the triplet excited state (1.61,1.76, and 3.2 meV) and field dependence of these levels were observed at Q = (000.5). From these data, the intra-chain coupling constant = 4.3 meV and the anisotropic parameters D = 0.76meV and |E| = 0.038 meV were estimated. For NDMAP the gap was observed at about 0.48 and 0.64 meV at Q = (000.5). By applying the field of 5 T, the first excited state shifted below the resolution less than 0.1.3 meV. Above the critical field Hc, the intensities of singlet-triplet excitation becomes very weak. This work is the first neutron scattering study on a Haldane system above the critical fields",

keywords = "Antiferromagnet-one-dimensional, Haldane gap, Haldane system, Neutron scattering",

author = "N. Metoki and Y. Koike and Y. Matsuoka and T. Kobayashi and M. Yamashita",

year = "2001",

doi = "10.1016/S0304-8853(00)01196-3",

language = "English",

volume = "226-230",

pages = "414--416",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

number = "PART I",

}

TY - JOUR

T1 - Neutron scattering study of linear-chain Haldane compounds NDMAZ and NDMAP

AU - Metoki, N.

AU - Koike, Y.

AU - Matsuoka, Y.

AU - Kobayashi, T.

AU - Yamashita, M.

PY - 2001

Y1 - 2001

N2 - Neutron scattering experiments were carried out for the new Haldane compounds Ni(C5H14N2)2N 3(ClO4) (NDMAZ) and Ni(C5H14Nj) 2N3(PF6) (NDMAP) in the magnetic field up to 10T in order to investigate the field-induced long-range ordering and the spin excitation. For NDMAZ, the triplet excited state (1.61,1.76, and 3.2 meV) and field dependence of these levels were observed at Q = (000.5). From these data, the intra-chain coupling constant = 4.3 meV and the anisotropic parameters D = 0.76meV and |E| = 0.038 meV were estimated. For NDMAP the gap was observed at about 0.48 and 0.64 meV at Q = (000.5). By applying the field of 5 T, the first excited state shifted below the resolution less than 0.1.3 meV. Above the critical field Hc, the intensities of singlet-triplet excitation becomes very weak. This work is the first neutron scattering study on a Haldane system above the critical fields

AB - Neutron scattering experiments were carried out for the new Haldane compounds Ni(C5H14N2)2N 3(ClO4) (NDMAZ) and Ni(C5H14Nj) 2N3(PF6) (NDMAP) in the magnetic field up to 10T in order to investigate the field-induced long-range ordering and the spin excitation. For NDMAZ, the triplet excited state (1.61,1.76, and 3.2 meV) and field dependence of these levels were observed at Q = (000.5). From these data, the intra-chain coupling constant = 4.3 meV and the anisotropic parameters D = 0.76meV and |E| = 0.038 meV were estimated. For NDMAP the gap was observed at about 0.48 and 0.64 meV at Q = (000.5). By applying the field of 5 T, the first excited state shifted below the resolution less than 0.1.3 meV. Above the critical field Hc, the intensities of singlet-triplet excitation becomes very weak. This work is the first neutron scattering study on a Haldane system above the critical fields

KW - Antiferromagnet-one-dimensional

KW - Haldane gap

KW - Haldane system

KW - Neutron scattering

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JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

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