The spectral degeneracies emerging as a consequence of parity-time (PT) symmetry exhibit a profound divergence from their conventional counterparts. They possess non-Hermitian nature and are ...

The standard search procedure to find topological materials involves computing the band structure of a particular material to understand the electronic states, then feed this information to a formula ...

Deliberately breaking crystal symmetry widens topological bandgaps in 2D magnets made from light elements, predicting quantum ...

Symmetry is a powerful framework to perceive and predict the physical world. The structure of materials is described by a combination of rotations, rotation-inversions and translational symmetries. By ...

Ordered materials with 7-fold, 9-fold or 11-fold symmetries are never observed in nature. Researchers discovered the reason for this when they tried to impose a 7-fold symmetry on a layer of charged ...

Physicists have long suspected that a peculiar quantum state lurks inside a class of materials known as kagome metals, but ...

Rotational symmetry-broken mechanism for simplifying exceptional point achievement. (a) 3D model of waveguide coupled RTR. (b) Field distribution and (c) far-field pattern of RTR at EP. The spectral ...