近日，德国马克斯·普朗克微观结构物理研究所Stuart S. P. Parkin团队实现了二维范德华材料中的自旋玻璃。这一研究成果于2026年5月7日发表在《科学》杂志上。

近期范德华材料的进展重新激发了人们对维度对磁性相变影响的兴趣。尽管有序磁相已被证明能在二维极限下存在，但在更低维度中寻找具有淬灭磁性无序的自旋玻璃相的尝试一直未能成功。

研究组提供了证据，表明在Fe3GeTe2（FGT）中，由随机分布的Fe原子产生了自旋玻璃态。交流磁化率显示出强烈的频率依赖性，表明存在缓慢的自旋动力学。其他独特现象，包括老化、混沌和记忆效应，进一步证实了玻璃态的存在。值得注意的是，研究组发现即使在单原胞厚的FGT中，这一状态依然存在，从而证实了二维自旋玻璃的存在。

附：英文原文

Title: Realization of a spin glass in a two-dimensional van der Waals material

Author: Banabir Pal, Ajesh Kollakuzhiyil Gopi, Yicheng Guan, Ruifeng Wang, Anirban Chakraborty, Kajal Tiwari, Anagha Mathew, Abhay K. Srivastava, Wenjie Zhang, Ilya Kostanovski, Binoy K. Hazra, Holger Meyerheim, Stuart S. P. Parkin

Issue&Volume: 2026-05-07

Abstract: Recent advances in van der Waals materials have sparked renewed interest in the impact of dimensionality on magnetic phase transitions. Although ordered magnetic phases have been demonstrated to survive in the two-dimensional (2D) limit, the quest for a spin glass with quenched magnetic disorder in lower dimensions has proven elusive. Here, we provide evidence of a spin glass emerging from randomly distributed Fe atoms in Fe3GeTe2 (FGT). ac magnetic susceptibility displays a strong frequency dependence indicative of slow spin dynamics. Additional distinctive phenomena, including aging, chaos, and memory effects, further substantiate the existence of a glassy state. Notably, we found that this state persists even in single-cell–thick FGT, thereby confirming the existence of a 2D spin glass.

DOI: adp0091

Source: https://www.science.org/doi/10.1126/science.adp0091