Intrinsic in-plane nodal chain and generalized quaternion charge protected nodal link in photonics

Wang, DY; Yang, B; Guo, QH; Zhang, RY; Xia, LB; Su, XQ; Chen, WJ; Han, JG; Zhang, S; Chan, CT

Chan, CT (corresponding author), Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Peoples R China.; Han, JG (corresponding author), Tianjin Univ, Ctr Terahertz Waves, Tianjin, Peoples R China.; Han, JG (corresponding author), Tianjin Univ, Coll Precis Instrument & Optoelect Engn, Tianjin, Peoples R China.; Han, JG (corresponding author), Minist Educ, Key Lab Optoelect Informat & Technol, Tianjin, Peoples R China.; Zhang, S (corresponding author), Univ Birmingham, Sch Phys & Astron, Birmingham

LIGHT-SCIENCE & APPLICATIONS, 2021; 10 (1):

Abstract

Nodal lines are degeneracies formed by crossing bands in three-dimensional momentum space. Interestingly, these degenerate lines can chain together vi......

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