Nature Publication: Type-II Weyl semimetals


Researchers from our group and collaborators in Princeton and Beijing have predicted the existence of a new type of particle called the type-II Weyl fermion in metallic materials.

Energy spectrum of type-II Weyl fermions
Left: Allowed states for the standard type-I Weyl fermion. When energy is tuned from below, at zero energy, a pinch in the number of allowed states guarantees the absence of many-body phenomena such as superconductivity or ordering. Right: The newly discovered type-II Weyl fermion. At zero energy, a large number of allowed states are still available. This allows for the presence of superconductivity, magnetism, and pair-density wave phenomena


Alexey A. Soluyanov, Dominik Gresch, Zhijun Wang, QuanSheng Wu, Matthias Troyer, Xi Dai and B. Andrei Bernevig, Nature 527, 495–498 (26 November 2015), (arXiv:1507.01603).

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