摘要
In this work, based on symmetry analysis and first-principles calculations, we show that commensurate twisting drives magnetic topological phase transitions in stacked bilayer CrO, transforming an antiferromagnetic Dirac semimetal into a d-wave altermagnetic bipolarized Weyl semimetal or an unconventional compensated magnetic Weyl semimetal, with Weyl points protected by the spin symmetry at generic k points.