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.
| Original language | English |
|---|---|
| Article number | 042035 |
| Journal | Journal of Physics: Conference Series |
| Volume | 568 |
| DOIs | |
| Publication status | Published - 2014 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Spin and hole dynamics in carrier-doped quantum haldane chain. / Yokoo, T.; Itoh, S.; Ibuka, S.; Yoshizawa, H.; Akimitsu, Jun.
In: Journal of Physics: Conference Series, Vol. 568, 042035, 2014.Research output: Contribution to journal › Article
}
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, 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). 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.
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U2 - 10.1088/1742-6596/568/4/042035
DO - 10.1088/1742-6596/568/4/042035
M3 - Article
VL - 568
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
M1 - 042035
ER -