Spin and hole dynamics in carrier-doped quantum haldane chain

T. Yokoo; S. Itoh; S. Ibuka; H. Yoshizawa; J. Akimitsu

doi:10.1088/1742-6596/568/4/042035

Spin and hole dynamics in carrier-doped quantum haldane chain

T. Yokoo, S. Itoh, S. Ibuka, H. Yoshizawa, J. Akimitsu

Research Institute for Interdisciplinary Science

Research output: Contribution to journal › Conference article › peer-review

Abstract

Quantum spins in one-dimensional (1D) chains exhibit characteristic features such as the Haldane gap (S 1) and the spin-Peierls state (S 1/2). Multiple degrees of freedom associated with quantum spins have recently become a focus of attention. We present here the spin dynamics in lightly hole-doped Nd_2-xCa_xBaNiO₅ (x 0.1), a 1D Haldane system, using pulsed neutron inelastic scattering. The entire dispersion of the 1D Haldane chain was clearly observed with a ∼14 meV spin gap (Haldane gap) at the magnetic zone center. Below the gap, much spectral weight was observed, indicating an in-gap state possibly originating from the doped holes in Haldane chains.

Original language	English
Article number	042035
Journal	Journal of Physics: Conference Series
Volume	568
DOIs	https://doi.org/10.1088/1742-6596/568/4/042035
Publication status	Published - 2014
Event	27th International Conference on Low Temperature Physics, LT 2014 - Buenos Aires, Argentina Duration: Aug 6 2014 → Aug 13 2014

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1088/1742-6596/568/4/042035

Fingerprint Dive into the research topics of 'Spin and hole dynamics in carrier-doped quantum haldane chain'. Together they form a unique fingerprint.

Cite this

@article{069be6a7e3084922a1a4513741e84d88,

title = "Spin and hole dynamics in carrier-doped quantum haldane chain",

abstract = "Quantum spins in one-dimensional (1D) chains exhibit characteristic features such as the Haldane gap (S 1) and the spin-Peierls state (S 1/2). Multiple degrees of freedom associated with quantum spins have recently become a focus of attention. We present here the spin dynamics in lightly hole-doped Nd2-xCaxBaNiO5 (x 0.1), a 1D Haldane system, using pulsed neutron inelastic scattering. The entire dispersion of the 1D Haldane chain was clearly observed with a ∼14 meV spin gap (Haldane gap) at the magnetic zone center. Below the gap, much spectral weight was observed, indicating an in-gap state possibly originating from the doped holes in Haldane chains.",

author = "T. Yokoo and S. Itoh and S. Ibuka and H. Yoshizawa and J. Akimitsu",

note = "Publisher Copyright: {\textcopyright} Published under licence by IOP Publishing Ltd. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.; 27th International Conference on Low Temperature Physics, LT 2014 ; Conference date: 06-08-2014 Through 13-08-2014",

year = "2014",

doi = "10.1088/1742-6596/568/4/042035",

language = "English",

volume = "568",

journal = "Journal of Physics: Conference Series",

issn = "1742-6588",

publisher = "IOP Publishing Ltd.",

}

TY - JOUR

T1 - Spin and hole dynamics in carrier-doped quantum haldane chain

AU - Yokoo, T.

AU - Itoh, S.

AU - Ibuka, S.

AU - Yoshizawa, H.

AU - Akimitsu, J.

PY - 2014

Y1 - 2014

N2 - Quantum spins in one-dimensional (1D) chains exhibit characteristic features such as the Haldane gap (S 1) and the spin-Peierls state (S 1/2). Multiple degrees of freedom associated with quantum spins have recently become a focus of attention. We present here the spin dynamics in lightly hole-doped Nd2-xCaxBaNiO5 (x 0.1), a 1D Haldane system, using pulsed neutron inelastic scattering. The entire dispersion of the 1D Haldane chain was clearly observed with a ∼14 meV spin gap (Haldane gap) at the magnetic zone center. Below the gap, much spectral weight was observed, indicating an in-gap state possibly originating from the doped holes in Haldane chains.

AB - Quantum spins in one-dimensional (1D) chains exhibit characteristic features such as the Haldane gap (S 1) and the spin-Peierls state (S 1/2). Multiple degrees of freedom associated with quantum spins have recently become a focus of attention. We present here the spin dynamics in lightly hole-doped Nd2-xCaxBaNiO5 (x 0.1), a 1D Haldane system, using pulsed neutron inelastic scattering. The entire dispersion of the 1D Haldane chain was clearly observed with a ∼14 meV spin gap (Haldane gap) at the magnetic zone center. Below the gap, much spectral weight was observed, indicating an in-gap state possibly originating from the doped holes in Haldane chains.

UR - http://www.scopus.com/inward/record.url?scp=84919691485&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84919691485&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/568/4/042035

DO - 10.1088/1742-6596/568/4/042035

M3 - Conference article

AN - SCOPUS:84919691485

VL - 568

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

M1 - 042035

T2 - 27th International Conference on Low Temperature Physics, LT 2014

Y2 - 6 August 2014 through 13 August 2014

ER -