31 citations · 57 across the 5 of their papers we have counts for
5 papers
Surface potential-driven surface states in 3D topological photonic crystals
Haedong Park, Sang Soon Oh, Seungwoo Lee
Surface potential in a topological matter could unprecedentedly localize the waves. However, this surface potential is yet to be exploited in topological photonic systems. Here, we…
Phase transitions of non-Abelian charged nodal links in a spring-mass system
Haedong Park, Stephan Wong, Adrien Bouhon +2
Although a large class of topological materials have uniformly been identified using symmetry properties of wave functions, the past two years have seen the rise of multi-gap topol…
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…
Sign freedom of non-Abelian topological charges in phononic and photonic topological insulators
Haedong Park, Sang Soon Oh
The topological nature of nodal lines in a three-band system can be described by non-Abelian topological charges called quaternion numbers. Due to the gauge freedom of the eigensta…
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…