97 citations · 103 across the 5 of their papers we have counts for
5 papers
Eigenstate switching of topologically ordered states using non-Hermitian perturbations
Cheol Hun Yeom, Beom Hyun Kim, Moon Jip Park
Topologically ordered phases have robust degenerate ground states against the local perturbations, providing a promising platform for fault-tolerant quantum computation. Despite of…
Non-local features of the spin-orbit exciton in Kitaev materials
Blair W. Lebert, Subin Kim, Beom Hyun Kim +7
A comparative resonant inelastic x-ray scattering (RIXS) study of three well-known Kitaev materials is presented: -LiIrO, NaIrO, and -RuCl. Despite simila…
Collective non-Hermitian skin effect: Point-gap topology and the doublon-holon excitations in non-reciprocal many-body systems
Beom Hyun Kim, Jae-Ho Han, Moon Jip Park
Open quantum systems provide a plethora of exotic topological phases of matter that has no Hermitian counterpart. Non-Hermitian skin effect, macroscopic collapse of bulk states to…
Multiferroic-enabled magnetic exciton in 2D quantum entangled van der Waals antiferromagnet NiI2
Suhan Son, Youjin Lee, Jae Ha Kim +15
Matter-light interaction is at the center of diverse research fields from quantum optics to condensed matter physics, opening new fields like laser physics. A magnetic exciton is o…
Magnetic couplings, optical spectra, and spin-orbit exciton in 5d electron Mott insulator Sr2IrO4
Beom Hyun Kim, G. Khaliullin, B. I. Min
Based on the microscopic model including strong spin-orbit coupling, on-site Coulomb and Hund's interactions, as well as crystal field effects, we have investigated magnetic and op…