21 citations · 35 across the 7 of their papers we have counts for
7 papers
Tunable Superconductivity Mediated by Heavy-Electron Plasmons: Band-Structure and Quantum-Geometric Engineering
Sang Hyun Park, Junyeong Ahn
Conventional superconductivity derives its pairing glue from lattice vibrations, tying its characteristic scales to chemistry and atomic masses. Plasmonsthe collective oscillati…
Interfacial strong coupling and negative dispersion of propagating polaritons in freestanding oxide membranes
Brayden Lukaskawcez, Shivasheesh Varshney, Sooho Choo +12
Membranes of complex oxides like perovskite SrTiO3 extend the multi-functional promise of oxide electronics into the nanoscale regime of two-dimensional materials. Here we demonstr…
Nodal lines in a honeycomb plasmonic crystal with synthetic spin
Sang Hyun Park, E. J. Mele, Tony Low
We analyze a plasmonic model on a honeycomb lattice of metallic nanodisks that hosts nodal lines protected by local symmetries. Using both continuum and tight-binding models, we sh…
Helical boundary modes from synthetic spin in a plasmonic lattice
Sang Hyun Park, Michael Sammon, Eugene Mele +1
Artificial lattices have been used as a platform to extend the application of topological physics beyond electronic systems. Here, using the two-dimensional Lieb lattice as a proto…
Non-Hermitian chiral degeneracy of gated graphene metasurfaces
Soojeong Baek, Sang Hyun Park, Donghak Oh +9
Non-Hermitian degeneracies, also known as exceptional points (EPs), have been the focus of much attention due to their singular eigenvalue surface structure. Nevertheless, as perta…
Plasmonic gain in current biased tilted Dirac nodes
Sang Hyun Park, Michael Sammon, Eugene Mele +1
Surface plasmons, which allow extreme confinement of light, suffer from high intrinsic electronic losses. It has been shown that stimulated emission of electrons can transfer energ…
Graphene plasmon-phonon coupled modes at the exceptional point
Sang Hyun Park, Shengxuan Xia, Sang-Hyun Oh +2
Properties of graphene plasmons are greatly affected by their coupling to phonons. While such coupling has been routinely observed in both near-field and far-field graphene spectro…