晨间信号Morning Signal
《科学》 2026年9月24日 · 中文解读

二维理论可扭转材料数据库

2D theoretically twistable material database · Y. Jiang et al.
约 36 分钟Research Summaries在小程序里点播,20 到 60 分钟做好
这篇讲什么
研究团队基于拓扑二维材料数据库开发高通量筛选算法,将“理论可扭转材料”定义为低能电子结构干净、可用简单连续模型描述的二维晶体,共筛选出61种可扭转半金属和1568种可扭转绝缘体。这些候选材料涵盖六方、正方和矩形晶格,并具有不同的能谷结构与自旋轨道耦合强度,大幅拓展了莫尔材料的研究版图。研究者还对多种候选化合物进行了块体合成与单层剥离,并将其制成扭转器件开展输运和低温扫描测量,所有计算性质已通过公开数据库发布。
原文开头
Yi Jiang†, Urko Petralanda†, Hanqi Pi†, Grigorii Skorupskii†, et al. INTRODUCTION: Twisting one atomically thin crystal against another creates a large- scale interference pattern called a moiré pattern, which can strongly reshape how electrons move. This idea has already produced unusual topological states, magnetism, and superconductivity in a few celebrated systems, including twisted bilayer graphene, but the much larger family of possible two- dimensional (2D) crystals has barely been explored. RATIONALE: The main obstacle is that not every material remains understandable after twisting. Many have overly complicated electronic structures, making reliable predictions difficult. We therefore defined “theoretically twistable” materials as 2D crystals with clean, simple electronic features near the energies of interest. …
摘自《科学》(Science)2026年9月24日,Y. Jiang et al.。仅引用开头一小段供了解文章,版权归原刊所有,全文请阅读原刊。
晨间信号小程序码
微信扫码,在小程序里听完整版
不用登录先听一篇 · 或在微信搜索小程序 晨间信号
同期其他文章