- Letter
Simultaneous colossal magnetoresistance and angular magnetoresistance in the antiferromagnetic semiconductor
Phys. Rev. B 112, L140405 – Published 22 October, 2025
DOI: https://doi.org/10.1103/p2c5-r163
Abstract
We report on the discovery of field-induced large colossal magnetoresistance (CMR) of ∼ − and angular magnetoresistance (AMR) ∼ achieved simultaneously in an antiferromagnetic rare-earth dichalcogenide . Such intriguing observations are attributed to strong magnetic anisotropy and magnetic-field induced antiferromagnetic to ferromagnetic transition of the localized spins, which in turn closes the bandgap by lifting the degeneracy of Se- bands near Fermi level. Our density functional theory calculations perfectly replicate the experimental findings based on the Brillouin function and carries transport model. The present work provides a potential simple antiferromagnetic material for achieving angle-sensitive spintronic devices.