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 language | English |
|---|---|
| Article number | 012045 |
| Journal | Journal of Physics: Conference Series |
| Volume | 502 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2014 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
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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 journal › Article
}
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
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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 -