Itinerant antiferromagnetic BaMn${}_2$Pn${}_2$'s showing both negative and positive magnetoresistances

Kim-Khuong Huynh, Takuma Ogasawara, Keita Kitahara +7

We report the discovery of a novel giant magnetoresistance (GMR) phenomenon in a family of BaMn${}_2$Pn${}_2$ antiferromagnets (Pn stands for P, As, Sb, and Bi) with a parity-time…