Dynamical properties of spins and holes in carrier doped quantum Haldane chain

T. Yokoo, S. Itoh, D. Kawana, H. Yoshizawa, Jun Akimitsu

Research output: Contribution to journalArticle

3 Citations (Scopus)

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). Recently multi degrees of freedom in cooperation with quantum spins are focused. We present here spin dynamics in the lightly hole doped Nd2-xCaxBaNiO5 (x=0.035), 1D Haldane system by means of pulsed neutron inelastic scattering method. One-magnon band with a spin gap (Haldane gap) was visible with the decrease of the zone boundary energy to 60 meV. In contrast, the spin gap slightly increases. Dynamical structures inside spin gap upon carrier doping showing incommensurate structure centered at the magnetic zone center was newly observed which is possibly originating from the doped holes in Haldane chains.

Original languageEnglish
Article number012045
JournalJournal of Physics: Conference Series
Volume502
Issue number1
DOIs
Publication statusPublished - 2014
Externally publishedYes

Fingerprint

spin dynamics
inelastic scattering
neutron scattering
degrees of freedom
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Dynamical properties of spins and holes in carrier doped quantum Haldane chain. / Yokoo, T.; Itoh, S.; Kawana, D.; Yoshizawa, H.; Akimitsu, Jun.

In: Journal of Physics: Conference Series, Vol. 502, No. 1, 012045, 2014.

Research output: Contribution to journalArticle

@article{6c3ccdc8e22f4a09bbc3b99acc5e012d,
title = "Dynamical properties of spins and holes 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). Recently multi degrees of freedom in cooperation with quantum spins are focused. We present here spin dynamics in the lightly hole doped Nd2-xCaxBaNiO5 (x=0.035), 1D Haldane system by means of pulsed neutron inelastic scattering method. One-magnon band with a spin gap (Haldane gap) was visible with the decrease of the zone boundary energy to 60 meV. In contrast, the spin gap slightly increases. Dynamical structures inside spin gap upon carrier doping showing incommensurate structure centered at the magnetic zone center was newly observed which is possibly originating from the doped holes in Haldane chains.",
author = "T. Yokoo and S. Itoh and D. Kawana and H. Yoshizawa and Jun Akimitsu",
year = "2014",
doi = "10.1088/1742-6596/502/1/012045",
language = "English",
volume = "502",
journal = "Journal of Physics: Conference Series",
issn = "1742-6588",
publisher = "IOP Publishing Ltd.",
number = "1",

}

TY - JOUR

T1 - Dynamical properties of spins and holes in carrier doped quantum Haldane chain

AU - Yokoo, T.

AU - Itoh, S.

AU - Kawana, D.

AU - Yoshizawa, H.

AU - Akimitsu, Jun

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). Recently multi degrees of freedom in cooperation with quantum spins are focused. We present here spin dynamics in the lightly hole doped Nd2-xCaxBaNiO5 (x=0.035), 1D Haldane system by means of pulsed neutron inelastic scattering method. One-magnon band with a spin gap (Haldane gap) was visible with the decrease of the zone boundary energy to 60 meV. In contrast, the spin gap slightly increases. Dynamical structures inside spin gap upon carrier doping showing incommensurate structure centered at the magnetic zone center was newly observed which is 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). Recently multi degrees of freedom in cooperation with quantum spins are focused. We present here spin dynamics in the lightly hole doped Nd2-xCaxBaNiO5 (x=0.035), 1D Haldane system by means of pulsed neutron inelastic scattering method. One-magnon band with a spin gap (Haldane gap) was visible with the decrease of the zone boundary energy to 60 meV. In contrast, the spin gap slightly increases. Dynamical structures inside spin gap upon carrier doping showing incommensurate structure centered at the magnetic zone center was newly observed which is possibly originating from the doped holes in Haldane chains.

UR - http://www.scopus.com/inward/record.url?scp=84899640871&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84899640871&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/502/1/012045

DO - 10.1088/1742-6596/502/1/012045

M3 - Article

AN - SCOPUS:84899640871

VL - 502

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 1

M1 - 012045

ER -