论文标题

h-ymno $ _3 $中的经典自旋液体或扩展关键范围?

Classical spin liquid or extended critical range in h-YMnO$_3$?

论文作者

Janas, Sofie, Lass, Jakob, Tutueanu, Ana-Elena, Haubro, Morten L., Niedermayer, Christof, Stuhr, Uwe, Xu, Guangyong, Prabhakaran, Dharmalingam, Deen, Pascale P., Holm-Dahlin, Sonja, Lefmann, Kim

论文摘要

对经典三角晶格的非弹性中子实验几何沮丧的抗fiferromagnet h-ymno $ _3 $揭示了弥漫性,无间隙的磁激发均存在下方和高于订购温度的无间隙磁激发,$ t_n $。激发的相关长度随着温度接近零而增加,与临界散射非常相似。我们在二维磁接地状态下将散射作为临界自旋旋转相关性建模,我们推测这可以提供一个通用框架,以了解通常归因于经典自旋液体的特征。

Inelastic neutron experiments on the classical triangular-lattice geometrically frustrated antiferromagnet h-YMnO$_3$ reveal diffuse, gapless magnetic excitations present both below and far above the ordering temperature, $T_N$. The correlation length of the excitations increases as the temperature approaches zero, bearing strong resemblance to critical scattering. We model the scattering as critical spin-spin correlations in a two-dimensional magnetic ground state, and we speculate that this may provide a general framework to understand features typically attributed to classical spin liquids.

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