Jianhua Wang, Xia Yang, Zongmeng Yang, Jiangbo Lu, Pin Ho, Wenhong Wang, Yee Sin Ang, Zhenxiang Cheng, Shibo Fang
Pentagonal 2D Altermagnets In their Research Article (10.1002/adfm.202505145), Yee Sin Ang, Zhenxiang Cheng, Shibo Fang, and co-workers identify the first altermagnetic second-order topological insulator, Penta-MnS2, and design a related high-performance altermagnetic tunneling junction. The figure illustrates a tunneling junction composed of MnS2, featuring both spin-polarized corner states and altermagnetic Bloch states. This work provides a new direction for the development of future low-power, high-speed memory devices.