74 citations · 178 across the 5 of their papers we have counts for
5 papers
Nodal lines in momentum space: topological invariants and recent realizations in photonic and other systems
Haedong Park, Wenlong Gao, Xiao Zhang +1
Topological insulators constitute one of the most intriguing phenomena in modern condensed matter theory. The unique and exotic properties of topological states of matter allow for…
Non-Abelian charged nodal links in dielectric photonic crystal
Haedong Park, Stephan Wong, Xiao Zhang +1
A nodal link is a special form of a line degeneracy (a nodal line) between adjacent bands in the momentum space of a three-dimensional topological crystal. Unlike nodal chains or k…
Enhanced higher harmonic generation from nodal topology
Ching Hua Lee, Han Hoe Yap, Tommy Tai +3
Among topological materials, nodal loop semimetals (NLSMs) are arguably the most topologically sophisticated, with their valence and conduction bands intersecting along arbitrarily…
Line nodes, Dirac points and Lifshitz transition in 2D nonsymmorphic photonic crystals
Jun Yu Lin, Nai Chao Hu, You Jian Chen +2
Topological phase transitions, which have fascinated generations of physicists, are always demarcated by gap closures. In this work, we propose very simple 2D photonic crystal latt…
Classification of stable Dirac and Weyl semimetals with reflection and rotational symmetry
Zihao Gao, Meng Hua, Haijun Zhang +1
Three dimensional (3D) Dirac semimetal is a novel state of quantum matter, characterized by the gapless bulk four-fold degeneracy near Fermi energy. Soon after its discovery, the c…