Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(a) A spin gap at Dirac point in CrI3 suggests that spin excitations in this system can have chiral and topological edge mode. Adapted with permission under a Creative Commons CC BY 4.0 license from ref (744). Copyright 2018 American Physical Society. (b) The FM phase transition in CrI3 is weakly first-order and controlled by spin gap. Adapted with permission from ref (745). Copyright 2020 American Physical Society.
