Ideal Type-II Weyl Phase and Topological Transition in Phononic Crystals
Ideal Type-II Weyl Phase and Topological Transition in Phononic Crystals
Ideal Weyl points, which are related by symmetry and thus reside at the same frequency, could promote the deep development and utilization of the Weyl physics. Although the ideal type-I Weyl points have been achieved in photonic crystals, the ideal type-II Weyl points with tilted cone-like band dispersions, are still …