Orbital-Selective Spin Splitting in the Altermagnetic Ti$_2$XX'Monolayers
Altermagnets have attracted intensive attention recently, owing to their unique combination of zero net magnetic moment of antiferromagnets and momentum space spin-splitting of ferromagnets. Herein, we systematically explore monolayer altermagnetic Ti$_2$XX'(X/X'= F, Cl, Br, I) materials for novel electronic properties...