22 May 2025
A team led by LMU physicist Dmitri Efetov has shown that two graphene layers twisted at an angle to each other behave like heavy-fermion metals. This opens up possibilities for the development of new applications.
If you twist two graphene layers at a certain angle to each other, you obtain a superconducting material, which is capable of a variety of further exotic quantum phases. Only discovered in 2018, this magic-angle twisted graphene is an ideal candidate for novel quantum devices. However, we still do not understand in detail how this unusual behavior comes about.