4 papers
Symmetry-protected coexistence of a nodal surface and multiple types of Weyl fermions in -
Xiao-Jing Gao, Yanfeng Ge, Yan Gao
The coexistence of topological states with different dimensionalities in a single crystalline system offers a unique platform to study the interplay of distinct fermionic excitatio…
Single-pair charge-2 Weyl-Dirac composite semimetals
Hui-Jing Zheng, Ke-Xin Pang, Yun-Yun Bai +2
The Nielsen--Ninomiya theorem requires that the total topological chiral charges in a crystal vanish, a constraint typically satisfied by identical nodes like Weyl--Weyl pairs. Whe…
Symmetry-Protected Minimum of Four Conventional Weyl Points in Nonmagnetic Crystals
Ze-Xin Xue, Ke-Xin Pang, Yun-Yun Bai +3
Realizing nonmagnetic Weyl semimetals (WSMs) with the minimal number of conventional Weyl points (WPs) and a clean Fermi surface remains a central challenge. Here, combining symmet…
Ideal Weyl fermions and double Kagome bands in a series of distorted armchair-type all- carbon networks
Yun-Yun Bai, Yan Gao, Weikang Wu +2
The study of the Weyl fermions and Kagome bands has recently attracted significant attention in condensed matter physics. However, realizing of perfect Weyl semimetals and double K…