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arXiv 2102.02818cond-mat.str-el
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三角晶格反铁磁体的带隙指纹效应

Fingerprinting Triangular-Lattice Antiferromagnet by Excitation Gaps

K. E. Avers, P. A. Maksimov, P. F. S. Rosa, S. M. Thomas, J. D. Thompson, W. P. Halperin, R. Movshovich, A. L. Chernyshev

摘要:

CeCd $_3$ As $_3$是一种稀土三角晶格反铁磁体,具有大的层间分离。我们的场依赖的热容量测量在稀释冰箱温度下,使我们能够跟踪整个反铁磁和顺磁区域的自旋激发间隙的场演化。不同的间隙演变的地方强有力的约束微观赝自旋模型,这反过来,产生一个密切的{ \it定量}描述的间隙行为。这种分析提供了至关重要的洞察力的性质的磁状态的CeCd $_3$作为$_3$,与确定性有关的条纹顺序和低能量模型参数,设置一个引人注目的范式,探索和理解快速增长的家庭的稀土为基础的三角晶格系统。

英文摘要:

CeCd$_3$As$_3$ is a rare-earth triangular-lattice antiferromagnet with large inter-layer separation. Our field-dependent heat capacity measurements at dilution fridge temperatures allow us to trace the field-evolution of the spin-excitation gaps throughout the antiferromagnetic and paramagnetic regions. The distinct gap evolution places strong constraints on the microscopic pseudo-spin model, which, in return, yields a close {\it quantitative} description of the gap behavior. This analysis provides crucial insights into the nature of the magnetic state of CeCd$_3$As$_3$, with a certainty regarding its stripe order and low-energy model parameters that sets a compelling paradigm for exploring and understanding the rapidly growing family of the rare-earth-based triangular-lattice systems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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