Braided Ising spin-tube physics in a purported kagome magnet

J. Nagl, D. Flavián, B. Duncan, S. Hayashida, O. Zaharko, E. Ressouche, J. Ollivier, Z. Yan, S. Gvasaliya, A. Zheludev
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Abstract

The magnetic insulator Nd$_3$BWO$_9$ has been proposed as a proximate spin-liquid candidate, realizing the highly frustrated breathing kagome lattice. We report a combination of single-crystal neutron scattering studies and numerical simulations, showing that it is the inter-plane couplings that determine the physics. To explain the exotic magnetism, we derive a simple one-dimensional Ising model composed of twisted triangular spin-tubes, i.e., triple braids of Ising spin chains with almost-orthogonal anisotropy frames and competing ferro-antiferromagnetic interactions. This model can account for the ground state, excitations, the numerous field-induced fractional magnetization plateau phases and incommensurate magnetic correlations at elevated temperatures.
据称是神户磁铁中的编织伊辛自旋管物理学
磁性绝缘体 Nd$_3$BWO$_9$ 已被提出作为一种近似品液候选体,实现了高度受挫的呼吸卡格晶格。我们结合单晶中子散射研究和数值模拟进行了报告,结果表明,决定物理学的是面间耦合。为了解释奇异的磁性,我们推导出了一个由扭曲的三角形自旋管组成的简单一维伊辛模型,即具有几乎正交各向异性框架和铁-反铁磁相互作用的伊辛自旋链的三重辫状结构。该模型可以解释高温下的基态、激发、大量场诱导的分数磁化高原相和不对称磁关联。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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