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

T. Yokoo; S. Itoh; D. Kawana; H. Yoshizawa; J. Akimitsu

doi:10.1088/1742-6596/502/1/012045

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

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

Research output: Contribution to journal › Conference article

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 language	English
Article number	012045
Journal	Journal of Physics: Conference Series
Volume	502
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/502/1/012045
Publication status	Published - Jan 1 2014
Externally published	Yes
Event	1st Conference on Light and Particle Beams in Materials Science 2013, LPBMS 2013 - Tsukuba, Japan Duration: Aug 29 2013 → Aug 31 2013

ASJC Scopus subject areas

Physics and Astronomy(all)

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Yokoo, T., Itoh, S., Kawana, D., Yoshizawa, H., & Akimitsu, J. (2014). Dynamical properties of spins and holes in carrier doped quantum Haldane chain. Journal of Physics: Conference Series, 502(1), [012045]. https://doi.org/10.1088/1742-6596/502/1/012045

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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.",

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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, J.

PY - 2014/1/1

Y1 - 2014/1/1

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.

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