Author(s): Fengshan Zheng, Hang Li, Shasha Wang, Dongsheng Song, Chiming Jin, Wenshen Wei, András Kovács, Jiadong Zang, Mingliang Tian, Yuheng Zhang, Haifeng Du, and Rafal E. Dunin-Borkowski
A vortex-like magnetic spin structure inside a small disk of material is stable without an external magnetic field and might be useful for information storage or processing.
[Phys. Rev. Lett. 119, 197205] Published Fri Nov 10, 2017