High‐Mobility Carriers in Germanene Derivatives

Buckled elemental analogs of graphene—2D‐Xenes silicene, germanene, and stanene—and their derivatives are predicted to host high‐mobility carriers. Experiments, however, have not as yet confirmed the predictions. Here, high‐mobility (exceeding 10 4 cm 2 V −1 s −1 ) carriers are discovered in intercalated multilayer germanene. Epitaxial films of antiferromagnetic and diamagnetic MGe 2 are synthesized via topochemical reactions, followed by...