Magnetism of quantum crystal and crystal growth control

在1 mK下获得了三角形晶格上二维3He的磁化曲线，在1.2-2.2 T处有1/2平台，在2.5 T处有一个肩。为了理解它们，多个自旋交换参数是必要的，但发现多达6个体交换参数不足以解释结果。在固体4He中成功地检测到极稀3He原子的核磁共振信号，发现3He形成了一个小的稳定簇。发现了固体4He在多孔气凝胶中的生长机制：成核。

The magnetization curve for two dimensional 3He on a triangular lattice was obtained at 1 mK, revealing a 1/2 plateau at 1.2-2.2 T and a shoulder at 2.5 T. To understand them the multiple spin exchange parameters are essential but it was found up to 6 bodies exchange parameters are not enough to explain the results. NMR signal from very dilute 3He atoms solved in solid 4He was successfully detected and it was found that 3He forms a small stable cluster. The growth mechanism of solid 4He in the porous aerogel was found due to a nucleation.