发表机构
Tohoku University（东北大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
用大规模 Lanczos 对角化和有限温度 Lanczos 方法研究自旋-1 三角晶格海森堡反铁磁体，确定零温磁化平台态及对应状态，给出有限温度下比热双峰结构等，为候选材料相关测量提供基准数据。
AI 中文摘要
我们使用大规模 Lanczos 对角化和有限温度 Lanczos 方法研究自旋-1 三角晶格海森堡反铁磁体。零温磁化过程在\(m = 0\)、\(1/3\)、\(7/9\)和\(8/9\)处呈现平台，有限温度下比热有双峰结构，这些结果为候选材料相关测量提供了基准数据。
英文摘要
We investigate the spin-1 kagome-lattice Heisenberg antiferromagnet using large-scale Lanczos diagonalization and the finite-temperature Lanczos method. The zero-temperature magnetization process exhibits plateaus at $m=0$, $1/3$, $7/9$, and $8/9$, where $m$ is the normalized magnetization. The $m=0$ plateau is identified as a trimer valence-bond-crystal state, while the high-field plateaus at $m=7/9$ and $8/9$ are identified as magnon crystals. In particular, the $m=8/9$ plateau corresponds to the exact localized-magnon crystal state. A smoothed zero-temperature magnetization curve constructed using the Gaussian-kernel smoothing method indicates magnetization jumps at the lower-field edge of the $m=1/3$ plateau and at the upper-field edges of the $m=7/9$ and $8/9$ plateaus. At finite temperatures, the specific heat exhibits a double-peak structure with peaks around $T/J\simeq0.1$ and $T/J\simeq1.1$, and the low-temperature peak may be related to trimer valence-bond-crystal ordering. The finite-temperature magnetization curves show that the $m=1/3$ plateau remains visible at low temperatures, whereas the high-field plateaus are rapidly smeared out by thermal effects. These results provide benchmark data for thermodynamic and high-field magnetization measurements in candidate spin-1 kagome-lattice materials.
CommentsThe numerical data are available in the Supplementary Data of Materials Today Quantum
Journal refMaterials Today Quantum 12, 100077 (2026)
DOI：10.1016/j.mtquan.2026.100077
