Linear magneto-electric phase in ultrathin MnPS${}_3$ probed by optical second harmonic generation

H. Chu, C. J. Roh, J. O. Island +7

The transition metal thiophosphates $M$PS${}_3$ ($M$ = Mn, Fe, Ni) are a class of van der Waals stacked insulating antiferromagnets that can be exfoliated down to the ultrathin limit…