フルヤ　シュンスケ   FURUYA Shunsuke   古谷　峻介    所属   埼玉医科大学  医学部 教養教育    職種   専任講師
論文種別	学術雑誌(原著)
言語種別	英語
査読の有無	査読あり
表題	Single-ion anisotropy in Haldane chains and the form factor of the O(3) nonlinear sigma model
掲載誌名	正式名：Physical Review B - Condensed Matter and Materials Physics ISSNコード：1098-0121
巻・号・頁	84(18)
著者・共著者	Shunsuke C. Furuya,Takafumi Suzuki,Shintaro Takayoshi,Yoshitaka Maeda,Masaki Oshikawa
発行年月	2011/11/21
概要	We consider spin-1 Haldane chains with single-ion anisotropy, which exists in known Haldane chain materials. We develop a perturbation theory in terms of anisotropy, where the magnon-magnon interaction is important even in the low-temperature limit. The exact two-particle form factor in the O(3) nonlinear sigma model leads to quantitative predictions on several dynamical properties, including the dynamical structure factor and electron-spin-resonance frequency shift. These agree very well with numerical results, and with experimental data on the Haldane chain material Ni(C5H14N2) 2N3(PF6). © 2011 American Physical Society.
DOI	10.1103/PhysRevB.84.180410