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arXiv · 0808.4073

Longitudinal SDW order in a quasi-1D Ising-like quantum antiferromagnet

S. Kimura·M. Matsuda·T. Masuda·S. Hondo·K. Kaneko·N. Metoki·M. Hagiwara·T. Takeuchi·K. Okunishi·Z. He·K. Kindo·T. Taniyama·M. Itoh
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Abstract

From neutron diffraction measurements on a quasi-1D Ising-like Co$^{\rm 2+}$ spin compound BaCo$_{\rm 2}$V$_{\rm 2}$O$_{\rm 8}$, we observed an appearance of a novel type of incommensurate ordering in magnetic fields. This ordering is essentially different from the N{\' e}el-type ordering, which is expected for the classical system, and is caused by quantum fluctuation inherent in the quantum spin chain. A Tomonaga-Luttinger liquid (TLL) nature characteristic of the gapless quantum 1D system is responsible for the realization of the incommensurate ordering.

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S. Kimura, M. Matsuda, T. Masuda, S. Hondo, K. Kaneko, N. Metoki, M. Hagiwara, T. Takeuchi, K. Okunishi, Z. He, K. Kindo, T. Taniyama, M. Itoh. 2008-08-29. Longitudinal SDW order in a quasi-1D Ising-like quantum antiferromagnet. https://doi.org/10.1103/physrevlett.101.207201

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