AI 中文总结
本研究通过高温高压合成Mn7C3自旋玻璃，发现其具三角伊辛结构、高冻结温度，明确电子为受挫与竞争根源，引入新型自旋玻璃家族及应用友好材料。
AI 中文摘要
晶体自旋玻璃因独特性质及应用而备受关注。本研究采用高温高压方法合成了块体Pnma型Mn7C3自旋玻璃。包括X射线衍射和磁化率测量在内的实验表征表明，该化合物具有基于三角伊辛模型的结构、37.4 K的高冻结温度及新型竞争机制。理论计算与模拟显示，三角Mn单元因极化C原子和信使Mn原子自发受挫并连接相邻Mn单元；每个三角C单元在三叉电子云中共享一个电子，该电子是Mn7C3中受挫与竞争的直接原因。三角Mn单元内的竞争表明，可能的磁构型高度简并，Mn7C3自旋玻璃具有高鲁棒性。本研究引入了一类具有有序微几何结构（驱动电子结构无序）的新型自旋玻璃家族，以及适用于高效硬件、人工智能算法设计等领域的应用友好型自旋玻璃材料。
英文摘要
Crystalline spin glasses are attractive compounds owing to their unique nature and applications. Here, we synthesised a bulk Pnma-type Mn7C3 spin glass by a high-temperature, high-pressure method. Experimental characterisation including X-ray diffraction and magnetic susceptibility measurements demonstrated that the compound has a triangular Ising-model-based structure, high freezing temperature of 37.4 K, and novel competition mechanism. Theoretical calculations and simulations revealed that the triangular Mn units are spontaneously frustrated and bridge neighbouring Mn units via polarised C atoms and messenger Mn atoms. Triangular C units each share one electron within a three-pronged electron cloud. This electron is the direct cause of frustration and competition in Mn7C3. The competition within the triangular Mn units suggests that the possible magnetic configurations are highly degenerate and that the Mn7C3 spin glass has high robustness. This work introduces a new family of spin glasses with ordered microgeometries that drive electronic structure disorder, and an application-friendly spin-glass material for use in fields like high-efficiency hardware and algorithm design in artificial intelligence.
Comments16 pages, 4 figures, 3 supplementary figures, 2 supplementary tables
