Fig. 1: Side views and transition from AFM to FM by different approaches of MnPXa3.

a, b The side views of AFM and FM monolayer MnPX3 (X = S and Se), in which the red/blue arrows represent the spin-up and -down, respectively. c The transition from AFM to FM MnPX3 by gate doping, multiferroic heterostructure, adsorption doping, and metal contact.