Author(s): Chang Liu, Yunyi Zang, Wei Ruan, Yan Gong, Ke He, Xucun Ma, Qi-Kun Xue, and Yayu Wang
A topological variant of the Hall effect that relies on spin chirality is observed in a topological insulator at four quantum layers, but vanishes for fewer and more layers.
[Phys. Rev. Lett. 119, 176809] Published Fri Oct 27, 2017