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Antiferromagnetism-induced spin splittings--even without atomic spin-orbitcoupling--are promising for highly efficient spintronics applications. Althoughtwo-dimensional (2D) centrosymmetric antiferromagnetic materials are abundant,they have not received extensive research attention owing to PTsymmetry-enforced net zero spin polarization and magnetization. Here, wedemonstrate a paradigm to harness nonrelativistic spin splitting (NRSS) bytwisting the bilayer of type-III centrosymmetric antiferromagnets. We predictby first-principles simulations and symmetry analysis on prototypes MnPSe3 andMnSe antiferromagnets (in the monolayer limit) that Rashba-Dresselhaus andZeeman-like NRSSs arise along specific paths in the Brillouin zone. Thestrength of Rashba-Dresselhaus spin splitting (up to $~\sim$90 meV{\AA})induced by twisting is comparable to that of spin-orbit coupling. The resultsalso demonstrate how applying biaxial strain and a perpendicular electric fieldcould be envisaged to tune the magnitude of NRSS. The findings reveal theuntapped potential of centrosymmetric antiferromagnets and thus expand thematerials to look for spintronics.

Nonrelativistic spin splittings in twisted bilayers of centrosymmetric antiferromagnets: A case study of MnPSe3 and MnSe